Have you tried Fedora Silverblue or Kinoite (the KDE version)? They also offer a fully immutable file system. The only hard part is adapting to life with an immutable filesystem, getting used to running things in containers/toolboxes, using flatpaks/appimage/snaps, etc.

I've been on it exclusively on my desktop and laptop for the past couple of months and have grown to like it a lot.