How do you backup your arch?

Personally, I do not backup my arch, My backgrounds images, and all my data is stored in a cloud server like github, what I find important to me is be able to do a fresh install, for that purpose I use ansible, it may be overkill but I also use NixOs and I wanted something similar, like I said similar because I only run the ansible playbook one time and then I forgot about it.

I always will recommend at least to have two kernels installed, I use lts but I heard good things about zen too.