Check out Protondb, it’s not only for the steamdeck, but (probably) all Linux derivates. You can sync your steam library to see, what works and how well.
Most people will include their distro in the comment details, but it rarely matters because Steam ships pretty much all the dependencies games need, so whether you’re on Debian (old packages) or Arch (new packages), the games will be running the same versions of common libraries.
So your distro choice really doesn’t matter that much, and if it does, you can use the FlatPak, which includes even more dependencies and is common across distros.
Check out Protondb, it’s not only for the steamdeck, but (probably) all Linux derivates. You can sync your steam library to see, what works and how well.
Most people will include their distro in the comment details, but it rarely matters because Steam ships pretty much all the dependencies games need, so whether you’re on Debian (old packages) or Arch (new packages), the games will be running the same versions of common libraries.
So your distro choice really doesn’t matter that much, and if it does, you can use the FlatPak, which includes even more dependencies and is common across distros.