I currently run windows 10 on my main desktop PC, and also have a steam deck that I sometimes use in desktop mode instead of my desktop. With the way Windows is going, and the way Linux Gaming is dramatically improving, I might consider ditching Windows, at least for the most part, on my next PC build. What would be the best distro to use for gaming, with casual use as well? Any suggestions?
As a new Linux user coming from Windows I'd recommend Mint. If you have very new hardware and want better support go for something like Endeavor, openSUSE tumbleweed, or Nobara/Fedora KDE. Almost any distro with exceptions like Alpine and Qubes will probably be more or less OK.