Endeavour
My daily operating system that I use since a few months already, based on Arch linux with graphical installation interface, it never broke (yet) it has a nice yay package manager, better than pacman, that lists even AUR packages. I use it with often with I3 window manager instead of KDE plasmashell.
Kubuntu
It was my first time linux operating system, it was a good startup for me, but after a long time I decided that snaps and ubuntu isn't something I like, especially with packages that had updated versions, for a long time not updated in their repositories. I understand that it's a stable LTS operating system but something wasn't for me catchy after a long time. After a few years I have tried to install it with offline more, unfortunately i wanst able to install even firefox, snap symlink was literally broken.
Manjaro
This was my first time to try out arch operating system like thing, I wasn't struggling with anything, found some nice packages and I was enjoying that everything was quickly up to date.. The only thing that made me quite paranoid were Google TCP connections all the time on it. No idea why they were made in such extreme way but I stopped using it because of that.
Mint
I have been using it for a two weeks, it was quite nice like for a startup operating system, there was almost no problems with it, but I think it was my laptop problems, months ago there was a little problem where after rebooting few times the function keys stopped working, like brightness and volume, I have been trying to fix them, but instead I broke my XFCE sheel, last week I went back to Mint, installed it on 60gb partition, what got me sad was that KDE Connect wasn't working, I have tried to tinker with it but I am quite impatient so I didn't solve this.
MX
Used for a quite month, there was no problems and everything went smooth, gosh, I love these additional tools they preinstalled inside the operating system, most of them were quite usefull!