It's Activision. They haven't updated their app to work on android 11 yet. Using the controller that is lol. I've spoken to android about it. When u open the app and go on support all it's got is how to connect controller on android 9 and 10.
I guess it could be codm. codm is recognizing the controller on android 10 codm season 13, but codm on android 11 season 13 doesn't recognize the controller. do Xbox controllers work? I don't have one so I don't know about that one. to me it seems to be an android thing