I have been trying some of the immutable linux OSes because from what I understand they are more modern and feature better security and reliability. What I have found so far is shocking. Half of these don't support my laptop (probably because it's nvidia optimus). Some I tried like guix were very difficult to install, configure, and use with sprase documentation. Good luck trying to use KDE, wayland, or pipewire for example. BlendOS was notably better and could at least run on my laptop but chocked with nvidia driver issues.
I have switched to pop os on my laptop for now but looking at alternatives and what to install on my desktop.
My set-up actually is fairly complicated. I actually have a degree in CS and am looking for tech related jobs. I have decided to go a different direction for now but I intend to learn the nix package manager at some point. Partly because it comes included with my new OS (Bazzite/ublue), and partly because I hear it's useful and pays well in industry.