I've been running Bazzite exclusively for two years and, honestly, it works fine. It does work better than Windows for me, which refused to install on the same hardware.

I install everything from Flathub, I don't think I've ever installed an APK (is that a thing?)

I don't think the Linux distributions can really do anything better by themselves at this point. Most of the issues you run into are because you're trying to run Windows software (via Wine/Proton) that may have issues, the hardware support is subpar (Nvidia) or the Linux version of the app is poor.

It did finally cross the line for me where using Linux is more enjoyable than Windows or Linux, which I honestly never thought would happen when I started using it on and off ~20 years ago.