There are whole guides online how to walk around these issues and even then I could not get the audio working. Somehow it relies on some old ALSA API, which is no longer maintained/supported on Ubuntu/Kubuntu, or I'm just too stupid to make it work. AI assistants could not provide working solution for me either.
I've moved back to Linux a year ago after around 10 years of Windows (and I used to use Linux Slackware for ~15 years beforehand). I am amazed how big progress the KDE made and whole Linux ecosystem. Gaming these days is just as easy as on Windows, which was my primary reason to switch to Windows. My printer just works now. Even music production is excellent on Linux now. There is plenty of great software options to choose from and they just work - as I would expect from the mature ecosystem.
This all feels so good, given how Linux is not pushing trash into my computer (OS-bound spyware/bloatware), has excellent, customizable UI. Full freedom. I do feel that I own my hardware.
Yet I miss DaVinci Resolve. For now I use Kdenlive, which is nice for simple editing, but feels unfinished, or I just don't know how to use it correctly.