I really like openSUSE Tumbleweed, it basically feels like a polished rolling release.

But what exactly are you trying to do? If you're using Steam, it just works. You can even add non-Steam games to Steam and use Proton with it. If you can't figure it out, post the issues you run into and surely someone will lend some tips.

Manjaro was my first distro, and I still have a soft spot for it despite its flaws, but I tend to think Garuda now does a better job filling the Manjaro niche in just about every way.