Once you want to bulk edit on the go, use "every door". "SC" or "SCEE" (feature richer SC) aren't designed to update a large area quickly. (Check out each app when you become a serious mapper or want to make a real difference. Knowing the osm tools (and josm ofc) is highly important for efficiency.
Fedora.
I can highly recommend fedora to a newbie. It's easier to use than ubuntu. It doesn't come with snaps. You only need one or two methods of installing apps. It's safe. It's well written. It's supported very well. It's updated frequently. It incorporates innovative technology.
Opensuse and EndeaverOS are also very nice.