Cannot join friends (Xbox)

shortnstupid

I can no longer join friends lobbies or accept invites. At all. I have restarted router, game and console. Other household members can do it and my friends can join each other. Ican play online solo. I have uninstalled and reinstalled. I have revoked and reaccepted licences. Nothing works. Was going to buy when it leaves game pass. Now i cant play with friends. I dont see the point. Missing out on rift bp because ialways play with a friend :(