I'm not exactly the typical user here, but honestly Resolve is the best option on Linux. My caveat here is that I run Resolve on my stable box, which is a Debian box, and works beautifully.

codec support is the issue as a free version, but two things there - if you're editing, mp4 is generally not what you want anyway, and you can just use ffmpeg (or any variety of tools that use ffmpeg underneath but give you a gui) if you've got a file you need that its the only container format.

If you're doing it professionally, its $300, and worth buying. Much like buying Reaper for the whopping cost of $60 (personal)/$225 (commercial).

Regarding Wayland support, I think the first release addressing it was around March or April, and is fully supported in Resolve 19. I haven't tested, because my Debian Stable box is not using Wayland, so I personally won't test probably for a few months (or if I get an itch to try it on my 1700x Arch box).

GPU just needs OpenCL 1.2, so despite some previous snafus (needing nvidia) with GPU, AMD works just fine.