Earlier quoted context omitted.
May I suggest you give fedora a go? It still feels like the most mature distro out there, but I can be biased
I used both Fedora and Ubuntu for years and couldn't point to the _better_ distribution. Maybe one thing I had with Fedora: I had to trail one major distribution behind, because going for the most recent releases always ended up hurting me. But that's just for work. I don't think I can move my gaming to Linux yet
With Ubuntu I kept running into bugs which had already been fixed upstream, or which were caused either by Debian's or Ubuntu's patches. And even filing regular bug reports was basically impossible: the Ubuntu packagers will almost certainly ignore it, the Debian packagers aren't interested in bugs happening in mutated versions of outdated packages in their unstable repo, and the upstream maintainers aren't interested in bug reports for weirdly-patched old releases.
After several attempts at getting bugs fixed (sometimes even sending complete patches) and getting no response for years I gave up on Ubuntu and switched to Fedora. Their policy is to ship the freshest upstream releases possible, with as few patches as possible. This means I can just directly file my bug reports at the upstream vendor, and a fix will usually land on my system fairly quickly.
I do notice that I am slowly using more and more Flatpak desktop apps: why bother with the middleman when you can trivially get the latest release directly from the upstream vendor?