I stopped going on facebook a few years ago and don't miss it; I don't even need messenger as everyone migrated to whatsapp (yes I know, normal people don't want to move to signal, but got quite a few techy friends to migrate). The FB-only groups are indeed a problem, I'm delegating them to my wife.
IF I ever had to go to FB for anything, I'd probably install a wall-removing browser extension. Mobile app is of course out of question.