I've been there way back when windows 7 was nearing it's end of life. I'd been dual booting stock ubuntu for a while, and basically by the time proton got stable enough and win7 was officially dead, I chose to have Ubuntu be my default and keep win7 "just in case". About a year later I deleted the win7 partition because I hadn't used it and needed disk space for some bigger game :D
Sadly, if you do a lot of online gaming, Windows is still the way to go. If you're mainly a single player gamer like me, there really is no reason to stay tho. Everything just works on Linux (I use Nobara btw), with just a little tinkering from time to time for the stuff that just got released