I do agree with what @Decq@lemmy.world said. For most users is preferable to start of with a simpler distro. The biggest difference between other distros and NixOS is its declarative nature, and that its config files are written in the functional language Nix. This will most likely feel overwhelming, especially if your not accustomed to functional languages.

I think a better approach would be to go with the distro you mentioned, then when you gotten more used to the ins and out, perhaps have a look at installing Nix the package manager in Nobara (the same name as the language is confusion), or perhaps Home Manager. The later manage programs and config also declaratively, but only for users and not on a system level.

All in all, in most use cases NixOS and its declarative, immutable, reproducable and indestructive model is overkill. Its mostly only worth it if you have multiple computers that need to share config, systems that must work 100% of the time or if you’re a sucker for declarative approaches (like i am, i’ve also daily driven Linux for 18 years, and is a hobby programmer, so it was a lot easier to get into Nix/NixOS with that I think).