I’m hearing a lot of very poor advice in here, at least from my perspective as a Linux user who’s been through the gamut of various distros over the years.
Fedora atomic desktops are not beginner distros. That is not their purpose, and their limitations make many things a person may eventually want to do with their machine a lot more complicated.
Debian? Are we joking here? Debian is an amazing distro for what its purposes are, but it’s not beginner friendly. Debian is bare bones.
Linux Mint is the easiest answer here. Ubuntu LTS (or its classroom based fork edubuntu) is another great answer. I know every Linux user on the internet recoils in horror at the mention of Ubuntu but it really is a drop in plug and play solution for kids and old people.