sometimes the Recalbox reset my setup ( like themes, hidden games, or Virtual menus )
There is no reason for Recalbox to do this. The problem is probably with your memory card, something is corrupting the configuration.
Ideally, you should use an original, quality, class 10, small (16Gb) memory card just to store the system, and use an external USB device to store your ROMS, BIOS, etc.