I own my PC. The annoying thing is that I might have to pay a subscription for the gaming OS that I dual-boot to sometimes. Might just make me buy a console instead. OTOH, Sony already charges exorbitant subscription prices for the ability to play online.
If you are not talking about Steam, which comes with Proton out of the box, I'd recommend to give Legendary a try. It's basically the same thing, but with non-Steam games. And it's very user-friendly, like Steam.
In my experience, a great portion of competitive multiplayer games work. Although I have to admit that I mostly play games meant to be played among friends rather than against strangers.