Found some logs. Excerpts:
[2022/01/14 08:35:06.522] (INFO ) : [Music] Loading music /recalbox/share_init/system/.emulationstation/themes/recalbox-next/music/Recalbox Main Theme 02 - by machette.ogg
[2022/01/14 08:35:06.636] (INFO ) : [AudioManager] Theme music found (From theme folder).
[2022/01/14 08:35:06.637] (INFO ) : [Music] Playing Recalbox Main Theme 02 - by machette
[2022/01/14 08:35:06.647] (INFO ) : [InputManager] Initialize SDL Joystick system
[2022/01/14 08:35:06.648] (INFO ) : [InputManager] Joystick count: 1
[2022/01/14 08:35:06.648] (INFO ) : [InputManager] Lond configuration for Joystick #: 0
[2022/01/14 08:35:06.715] (INFO ) : [Input] Added joystick MY-POWER CO.,LTD. USB Joystick (GUID: 030000008f0e00000300000010010000, Instance ID: 8, Device Index: 0, Axis: 4, Hats: 1, Buttons: 12)
[2022/01/14 08:35:06.716] (INFO ) : [InputManager] Refresh joysticks
[2022/01/14 08:35:06.721] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:06.722] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:10.207] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:12.321] (INFO ) : [Run] Launching game...
[2022/01/14 08:35:12.321] (INFO ) : [Input] Configure emulators command : -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3
[2022/01/14 08:35:12.322] (INFO ) : [Run] Controllers config : -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3
[2022/01/14 08:35:12.322] (INFO ) : [AudioManager] Shutting down SDL AUDIO
[2022/01/14 08:35:12.479] (INFO ) : [Run] Command: python /usr/bin/emulatorlauncher.pyc -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3 -system mame -rom /recalbox/share_init/roms/mame/robby.zip -emulator libretro -core mame2010 -ratio auto
[2022/01/14 08:35:12.480] (INFO ) : [Pad2Keyboard] No pad2keyb configuration.
[2022/01/14 08:35:12.482] (INFO ) : [Hardware] Start in-game Hardware processes
[2022/01/14 08:35:12.482] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:13.747] (INFO ) : [Hardware] Stop in-game Hardware processes
[2022/01/14 08:35:13.748] (WARN!) : [Run] Non-Zero exit code 1 !
[2022/01/14 08:35:13.748] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:14.613] (INFO ) : [Renderer] Creating surface...
[2022/01/14 08:35:14.614] (INFO ) : [Renderer] Trying Resolution: 1280,720
[2022/01/14 08:35:14.643] (INFO ) : [Renderer] Created window successfully.
[2022/01/14 08:35:14.673] (INFO ) : [Renderer] Activating vertical sync'
[2022/01/14 08:35:14.673] (INFO ) : [Renderer] Normal VSync' activated.
[2022/01/14 08:35:14.674] (INFO ) : [WindowManager] Checking available OpenGL extensions...
[2022/01/14 08:35:14.674] (INFO ) : [WindowManager] ARB_texture_non_power_of_two: MISSING
[2022/01/14 08:35:15.179] (INFO ) : [AudioManager] SDL AUDIO Initialized
[2022/01/14 08:35:15.181] (INFO ) : [Music] Loading music /recalbox/share_init/system/.emulationstation/themes/recalbox-next/music/Recalbox Main Theme 04 - by machette.ogg
[2022/01/14 08:35:15.184] (INFO ) : [AudioManager] Theme music found (From theme folder).
[2022/01/14 08:35:15.185] (INFO ) : [Music] Playing Recalbox Main Theme 04 - by machette
[2022/01/14 08:35:15.195] (INFO ) : [InputManager] Initialize SDL Joystick system
[2022/01/14 08:35:15.196] (INFO ) : [InputManager] Joystick count: 1
[2022/01/14 08:35:15.197] (INFO ) : [InputManager] Lond configuration for Joystick #: 0
[2022/01/14 08:35:15.265] (INFO ) : [Input] Added joystick MY-POWER CO.,LTD. USB Joystick (GUID: 030000008f0e00000300000010010000, Instance ID: 9, Device Index: 0, Axis: 4, Hats: 1, Buttons: 12)
[2022/01/14 08:35:15.266] (INFO ) : [InputManager] Refresh joysticks
[2022/01/14 08:35:15.271] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:15.283] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:20.770] (INFO ) : [Run] Launching game...
[2022/01/14 08:35:20.771] (INFO ) : [Input] Configure emulators command : -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3
[2022/01/14 08:35:20.772] (INFO ) : [Run] Controllers config : -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3
[2022/01/14 08:35:20.772] (INFO ) : [AudioManager] Shutting down SDL AUDIO
[2022/01/14 08:35:20.945] (INFO ) : [Run] Command: python /usr/bin/emulatorlauncher.pyc -p1index 0 -p1guid 030000008f0e00000300000010010000 -p1name "MY-POWER CO.,LTD. USB Joystick" -p1nbaxes 4 -p1nbhats 1 -p1nbbuttons 12 -p1devicepath /dev/input/event3 -system mame -rom /recalbox/share_init/roms/mame/robby.zip -emulator libretro -core mame2010 -ratio auto
[2022/01/14 08:35:20.947] (INFO ) : [Pad2Keyboard] No pad2keyb configuration.
[2022/01/14 08:35:20.948] (INFO ) : [Hardware] Start in-game Hardware processes
[2022/01/14 08:35:20.948] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:22.285] (INFO ) : [Hardware] Stop in-game Hardware processes
[2022/01/14 08:35:22.286] (WARN!) : [Run] Non-Zero exit code 1 !
[2022/01/14 08:35:22.287] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:23.223] (INFO ) : [Renderer] Creating surface...
[2022/01/14 08:35:23.224] (INFO ) : [Renderer] Trying Resolution: 1280,720
[2022/01/14 08:35:23.254] (INFO ) : [Renderer] Created window successfully.
[2022/01/14 08:35:23.286] (INFO ) : [Renderer] Activating vertical sync'
[2022/01/14 08:35:23.286] (INFO ) : [Renderer] Normal VSync' activated.
[2022/01/14 08:35:23.286] (INFO ) : [WindowManager] Checking available OpenGL extensions...
[2022/01/14 08:35:23.287] (INFO ) : [WindowManager] ARB_texture_non_power_of_two: MISSING
[2022/01/14 08:35:23.888] (INFO ) : [AudioManager] SDL AUDIO Initialized
[2022/01/14 08:35:23.890] (INFO ) : [Music] Loading music /recalbox/share_init/system/.emulationstation/themes/recalbox-next/music/Recalbox Main Theme 07 - TETRIS - by djpostka.ogg
[2022/01/14 08:35:24.021] (INFO ) : [AudioManager] Theme music found (From theme folder).
[2022/01/14 08:35:24.022] (INFO ) : [Music] Playing Recalbox Main Theme 07 - TETRIS - by djpostka
[2022/01/14 08:35:24.031] (INFO ) : [InputManager] Initialize SDL Joystick system
[2022/01/14 08:35:24.031] (INFO ) : [InputManager] Joystick count: 1
[2022/01/14 08:35:24.031] (INFO ) : [InputManager] Lond configuration for Joystick #: 0
[2022/01/14 08:35:24.095] (INFO ) : [Input] Added joystick MY-POWER CO.,LTD. USB Joystick (GUID: 030000008f0e00000300000010010000, Instance ID: 10, Device Index: 0, Axis: 4, Hats: 1, Buttons: 12)
[2022/01/14 08:35:24.095] (INFO ) : [InputManager] Refresh joysticks
[2022/01/14 08:35:24.100] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!
[2022/01/14 08:35:24.101] (INFO ) : [MQTT] Publishing to tcp://127.0.0.1:1883 from recalbox-emulationstation OK!

[Configgen.LightGun] Playing /recalbox/share_init/roms/mame/robby.zip on system mame
[Configgen.LightGun] Seeking for Dolphinbars...
[Configgen.LightGun] Found 0 Dolphinbars among 0 Mouses
[Configgen.LightGun] No dolphin bar found.
Running command: SHELL=/bin/sh RUNLEVEL=S PWD=/ _=/usr/bin/python SDL_VIDEO_GL_DRIVER=/usr/lib/libGLESv2.so HOME=/recalbox/share/system LANG=de_DE.UTF-8 SDL_NOMOUSE=1 TERM=linux label=RECALBOX SDL_VIDEO_EGL_DRIVER=/usr/lib/libEGL.so INIT_VERSION=sysvinit- SHLVL=3 CONSOLE=/dev/console PATH=/sbin:/usr/sbin:/bin:/usr/bin PREVLEVEL=N /usr/bin/retroarch -L /usr/lib/libretro/mame2010_libretro.so --config /recalbox/share/system/configs/retroarch/retroarchcustom.cfg --appendconfig /recalbox/share/system/configs/retroarch/retroarchcustom.cfg.overrides.cfg /recalbox/share_init/roms/mame/robby.zip
Process exitcode: 1

There are 4 games listed under Mame right after install - shouln't these run out of the box ?

I added asteroids, the zip runs on the PC - but no joy on recalbox.
Does recalbox need more files?

the wiki has some dead links:
https://wiki.recalbox.com/en/tutorials/advanced-usage/arcade-in-recalbox

Where is the error log for diagnosis?

br, TommyZ

I just came about Recalbox.
Installed on a 16 GB SD card for Raspi 3B+

Boots fine
Cannot play any gane so far.

I'm specially interested in Mame / Asteroid, but even the 4 Mame Games that are in the image will not play.

I cannot find any logfile with error info.

I cannot change a setting from the Webinterface, like Keyboard language or timezone.

Any Ideas or should I just consider Recalbox a failure ?

br, TommyZ