It isn't a MP shooter necessarily, but you should really give Dead by Daylight a shot. Not only is it crossplay, available on a ton of platforms, AND free on Game Pass, but it is the most dead simple (lol) mp game I have every played while still remaining satisfying and having a huge amount of depth.
The game is legitimately a two button game, which is basically unheard of for serious MP games. There are tons of characters to learn, an immense amount of per character progression, and the community is fine (I haven't experienced anything toxic in my time with it).
I will say, I am sure tons of talented artists work on the game but to my eyes it is the ugliest modern game I have ever played. The character models and faces are just awful, but don't let that push you away because they have something really special with the way they mix simplistic controls, team-vs-solo player dynamics, and progression. If you want to dive deep into the more intricate mechanics you can, but its a blast to just run around and try and fix generators without engaging with the deeper meta beyond that.
Do you need to use voice chat to be effective in the game?