I also used it, and liked it, then Plasma, made it look like Windows 12 (looked like a combination of Windows and macOS), but I'm now on GNOME again. I might use something else in the future tough.
What are your problems exactly? For me, it was that GNOME was more stable and had some trackoad gestures. And on Plasma, something just felt small. I tried changing the text size, but it was still harder to read.
Weird I always have the opposite feeling with KDE: everything is big. Mostly the icons and bar at the bottom. However tbf it might be because I am used to Xfce4 and only recently went back to KDE
I'm sure Arch and Manjaro are worth a try, back in the day I tried RedHat/SuSE/Slackware/Debian/Ubuntu and ended up with Mint Cinnamon.
The closest to Arch I tried was using Debian Sid, but got annoyed when I one time had to battle with getting it up and running after a dist upgrade. I really hope Arch handles those upgrades better.
The most annoying with that upgrade was that the UI changed to an early version of Gnome Shell, I think that prompted me to switch to Mint MATE