I have the same issue whenever i search a game it keep saying “unable to connect to host” been like this for 3 days now and i couldn’t play a single game. I tried everything I checked if i was banned, non. I tired my brother’s account it joined a lobby immediately. I even called my brother and he searched a game on my account on his ps5 it was normal but when i do it in my ps5 specifically on my account it doesn’t search. I restarted my router nothing happened.