Arch may not be particularly easy to use, but it's a simple system, in that you can build a mental model of your entire setup with a fraction of the effort and time that you'd need to expend with other systems. It gives you the standard Linux experience without fuss, or handholding.
Nix, however, gives you several capabilities that other systems won't, but you're paying for that through its learning curve.
You could always try NixOS.
Arch may not be particularly easy to use, but it's a simple system, in that you can build a mental model of your entire setup with a fraction of the effort and time that you'd need to expend with other systems. It gives you the standard Linux experience without fuss, or handholding.
Nix, however, gives you several capabilities that other systems won't, but you're paying for that through its learning curve.