I get it, I actually use the exact same distros you mention: Pop!_OS, Endeavour and Fedora.
Had the same experience with Pop!_OS: those few things that did not “just work” but needed tinkering caused quite some issues. And yeah, somewhat more bleeding edge than Ubuntu LTS is nice: to use neovim on the 22.04 base, I’d need to use distrobox or build vim from source, but on Fedora and Arch, it “just works”.
I liked Endeavour, though I haven’t really used it with a DE, I went with Sway. So hard to compare, but the manual sysadmin intervention everyone keeps talking about has been minimal. AUR is amazing, pacman is fast and sane.
I went to Fedora because it is bleeding edge enough, but seems better tested and more stable than Arch. Also wanted to see how BTRFS is setup on there and test the rollbacks. The codec stuff has been terrible though. Even after enabling RPMFusion and installing a bunch of them, the Fedora source Firefox still refuses to do video calls in MS Teams. I’m using Flatpak browsers now but downloading flatpak updates is way slower than even the worst package manager for “native” binaries. Feels a bit odd to have to use a Flatpak for the browser.
If I had to install a new pc today, I’d go EndeavourOS with KDE (which I’m using on Fedora now), BTRFS and systemd-boot. I got to know systemd-boot in Pop!_OS and have tried a different boot manager (rEFInd), but systemd-boot is amazing.