Android 11 and 12 have extremely string prohibition for accessing data files. I have another reason to change OS of my phone, but I'll have to play this game from zero again to reach the gallery :(
I tried many times. Even while phone is shut down it's blocking any manipulations with Android/data founder.
They say it's for protection and safety, but I believe it's to prevent pirate games and such. I REALLY want to downgrade my phone to Android 10 one day.