I have tried enabling all game modes, my NAT is open, but it just searched forever. In 3 days, I had one pre-game lobby, where one other joined and we both waited for ages then quit. This problem also extends to Warzone. I have crossplay enables, no settings were changed from before, where it has worked for the last year with no issues. Other games such as Fortnite, Apex, PUBG have no problems finding games within seconds.