@Xhuul I use NixOS on all my systems (except mobile, for now).
I highly recommend feeling comfortable using, thinkering with, and fixing "normal" Linux before going to NixOS. And Arch is one of the best for that.
And only if, after maining Arch for a year+, you feel like configuring and doing more, I maybe recommend NixOS.
Read up on what hlissner has to say about it:
https://github.com/hlissner/dotfiles?tab=readme-ov-file#frequently-asked-questions
But once you start with it, everything else will seem primitive in comparison.