Bazzite is built very similarly to how SteamOS looks and works but there is also Pop!_OS which a lot of gamers use as the person you replied to said.

There is also Garuda Linux which is another gaming centered distro, but it can be a bit intimidating for newbies.

You might also check out CachyOS (what I’m currently using) and Nobara, which a lot of gamers are also using now.

CachyOS is similar to both SteamOS and Bazzite in having a dedicated mode for gaming much like is found on the Steam Deck. I personally have not tried it but saw it and thought it was interesting.

I personally use CachyOS as a desktop on my gaming PC and it’s been working pretty well with very limited setup on my part. As far as drivers, I haven’t actually done anything and everything was dedicated and playable. Versus when I was on KDE Neon, I needed to manually configure the driver for my RTX 4080 Super because my monitor’s refresh at 180 was not coming across until that fix happened. Didn’t need to do any of that on CachyOS.

The big thing about CachyOS that a lot of people like is the speed, as it does feel very fast and loads my games up very nicely. I personally have not done any testing, but gaming has felt good on this over the last month and a half of me using it.

It looks and feels a lot like Windows 10 does but that is mostly down to it using KDE Plasma. Not everyone uses the desktop on a Steam Deck, but its default desktop environment is KDE Plasma too. So whatever distro you use, I highly recommend going with KDE Plasma as your desktop since that’s what you’ve been most familiar with. You’ll notice when you go to different distro’s download pages that they’ll have stuff like a Gnome or Plasma distro option or they’ll ask you when you are installing it what desktop environment you want.