Why not just play it in Windows?
I use Linux for browsing and email and such. But it is worthless for gaming which is the whole point of a good GPU. People upgrade GPU’s for gaming and sometimes video.
That's fine if that's what you want. Put your Windows computer on-line to play games.
However, the point was that Linux is not worthless for playing games or video. Some of the best multi-display viz walls run Linux using high-powered GPUs.
Your main complaint is that no one is writing first-release FPS shooters for Linux. There are a few, but you just don't know about them.
Go with what you are familiar with. I'm not pushing anything anymore. I'm tired of the arguments.