Just reaffirming that my experience getting Activision/Blizzard stuff working on Linux has been mixed. I played older games that weren’t that GPU demanding, Hearthstone & Starcraft II, but the launcher would break pretty much every other update.

Mint is a great & everything works pretty much out of the box.

My understanding is that Fedora works pretty well for people gaming, GloriousEggroll, the guy that puts out the GE proton patches, contributes to Fedora, I think. Though you might want to check out NobaraLinux it is based on Feodra, but ships with additional goodies for gamers: Nvidia driver support, kernel patches, Discord, etc. https://nobaraproject.org/

Anything that you launch through Steam should also work, irrespective of your OS.

I would recommend that you check out Linux Mint. It is based on Ubuntu, but is in my experience easier to use out of the box.

They have a MATE version on their website.