How to automatically change wallpaper?

I have searched the community before asking but I did not find any solution,hence asking here.

Is there any way in which the wallpaper can change automatically from the app?
Say I have enabled the option for 2 days, then the next wallpaper will be applied automatically.

I dont seem to understand how to do that, hence, I dont have any screenshots.

PS - I think if the app can run in background then probably this is possible :thinking:. (Also I searched in the community whether the app can run in background or no. The result : there is a paid extension for that)

If anyone could help me, I would be really grateful.