Yeah same to me, since update Android 11 the file data folder invisible. And if try to make it visible, I'm gonna losing my phone data ( I've tried this and I don't want to do it again) so I can't replace the save data game before uninstall it :(
There are file managers on A11 which can access the data folder so you can still back up your saves. Old reddit thread but the one I always send to people: https://www.reddit.com/r/Android/comments/j3zgmm/managing_files_in_the_androidda...