i noticed on a utube video that you can get rid of the selfie camera hole at the top , by going typing in , Full Screen apps , scrolling down to Full screen apps , then clicking on it ,& clicking on three dots til it says advance , at top in the corner , then switch it off , but i can't find it , is this just a uk thing ?.
Maybe a bit late as you may know by now that hiding the camera hole feature was taken away with android 11. If you download good lock there is an app you can download multistar. It can enable you to hide the punch hole in apps you don't want it showing. Good lock is available in the galaxy store and its a Samsung app. Great for customising your phone. The one you need is right at the bottom.