I suspect you already know this, but for anyone curious: for many of the big live service games, Linux/Proton is usually no substitute for Windows - anti-cheat renders them unplayable. MW2, Fortnite, Tarkov, Hunt, PUBG, Day Z and Cycle are some examples. By contrast, Apex and Halo work fine.

I do quite a lot of my gaming on the Steam Deck these days, but have to keep a windows box around for this reason.

Sort of relatedly: does anyone know how well the Unreal Engine 5 editor works on Linux?