Creating a custom screensaver can add a personal touch to your computer or device. Below, I'll outline general steps for creating a custom screensaver:

For Windows:

Choose or Create Images:

Select the images you want to include in your screensaver Best drag Clicking Mouse. These could be personal photos, artwork, or any images you find appealing.
Create a Folder for Screensaver Images:

Organize your chosen images into a dedicated folder on your computer.

@shirizaan
I don't think that this is possible, because if it is, it would be mentioned here:
https://wiki.recalbox.com/en/basic-usage/features/screensavers

But who knows:
Maybe there is a possibility I didn't know ?

@tekkenism

delete games from the lists
Using 7.2.2-Reloaded, downloaded image file for RPi4 from Recalbox.com

It is not possible to delete games via Emulationstation in Recalbox 7.2.2, so either you are not using the official 7.2.2 version, or your cousin is deleting directly from your SD card.

If you are not using the latest official version (7.2.2 at the moment), we cannot support you.
If you are using the latest official version, but your cousin is knowledgeable enough to delete games directly on the SD card, there will be no configuration available in Recalbox to prevent this.

@2dsx no need to ask the same question in different languages, please.

https://forum.recalbox.com/topic/13829/duda-video-en-lugar-de-imagen-para-scrapear-y-screensaver-con-video

Anyway, it isn‘t currently possible.

I will love to see this happening as i finish my Recalbox cofe table project.I am missing only some cool screensaver 😄

@acris Thanks one more time.

It will be great 😉 I thumb up the one who can do this 😉