I've been using linux for over 30 years, from Linux from Scratch to Mint. Dont' pick a distro that makes you seem 1337 or anything. I must say, that for the not-so terminal-savvy user, linux Mint is a great pick, most stuff (if not all) can be done with the GUI, and the installer is a breeze.
Picking a distro is one thing, picking a desktop environment is, in my opinion, more important. With default Mint, you get Cinnamon, which is a great pick, a balance between saving resources and eye candy. You also have XFCE which is very light, but some integrations are lacking, and it's lightness shows in the basic appearance. Gnome is another beast, can almost look as slick as MacOS, but is very resource hungry. And then there's KDE. This is something your either love or hate, no inbetween.
And for every task you want to perform, you'll need to have a little selection process, since there's a lot of choices.
Steam works most of the time. I only know about NVidia cards, but with the right drivers (for which Mint has a nice tool) it works well.
As said, I've used a lot of different Linux flavours, from very hacky and compily ones to very UX oriented ones. In the end, the UX one did it for me, I just wanted something that worked. So I do recommend Mint with cinnamon.
Systemd together with NetworkManager are two pieces of software I really dislike. They go against the very Unix philosophy. I like being able to piece all the bricks together on my own, not having monolithic pieces of software that try to do everything.