The “want to learn” is gonna carry a lot of weight here but I think and arch based distro like cachy works well for this. Cachy was my first distro and I really wanted to learn so it gave we a working starting place from where I could tinker and replace parts one at a time until they fit my liking. If I were to reinstall today I’d do plain arch since I know what I want and don’t need Cachy’s defaults anymore. Obviously everyone has their preferences but I think cachy is a really solid approachable distro for beginners, there’s a reason it just passed steamOS to claim the throne of most used distro on the steam hardware survey