I think if you read through this you have pretty much everything you asked about. As for understanding what these sorts of commands do in the future I think ChatGPT is actually really useful for stuff like this with good documentation. Just ask what the commands do and it is usually quite helpful. Someone already said it but you have to want to learn this. If you want something easy to use and you don’t have to learn buy a Mac, you want great software compatibility buy a windows pc. If you want something that is more private and a community effort use Linux but unless you are using steam os on a steam deck it is not even close to being as user friendly as the others. I hope this changes but the current goals and mindsets of people in this community will prevent Linux from becoming easy to use and in the case of steam os you just need lots of money to make it an easy experience. There are a million other reasons that Linux’s current state is this way but this is the gist.

I would check out something like universal-blue.org. It is fedora silverblue but with fixes that make it more usable (like codecs by default). It also ships distrobox right out of the gate so you can use that for apps that aren’t in the fedora repos, copr , or flatpak. You also don’t have to layer packages if you install via distrobox so I think it ends up being pretty handy for stuff that you want that isn’t available as a flatpak. Finally there are many different images for all different desktop environments so you can switch between them just by using rpm-ostree rebase and the link to the different image.