Linux

Ignore anyone claiming there is some massive performance difference between any distros. That's some misinformed bullshit.

The main things you need to understand are the layers:

1. Kernel
2. Libraries
3. Package Manager
4. UserSpace

The Kernel layer will be largely transparent for you as a beginner. If you want bleeding edge stuff, install a "Rolling Release" distro that updates this layer much more frequently than "LTS (long term support)" releases will, as their function is to remain stable for longer periods of time.

Libraries will also be transparent to you as a new user, and even as experts, we rarely need to mess with this layer unless building something specific, which you will not need to worry about. Do not let the Chaff start talking some bullshit about how you to prefer this or that in distros blah blah ...you're a new user. Ignore that noise.

Package Manager: something to consider as you will be interacting with this. RPM, Apt/Deb and pacman are the big three, and all are very mature and stable. They all perform similar basic functions, just in different ways. You'll have a preference in time, but any of them work well. It's not a huge thing you need to worry about, but you'll surely like one over another in time.

UserSpace: where all the fun stuff is. Stick with a distro that has a large community. The biggest choice in how you will interact with your machine as a desktop user is here in that you want to choose a Desktop Environment, or DE. Gnome and KDE are the big two in this arena, but there are many: Xfce, Cinnamon, Mate...etc. Id suggest starting with Gnome if you like a clean MacOS type interface, or KDE if you really like the more verbose sort of Windows experience. Both are fine choices, and you won't have problems with either. Again, ignore everyone telling you one is better than the other...they are not. It's a preference. Try them both, and go with one. You can easily swap later if you want, no big deal.

Lastly: don't go off and use Bl00pyGameRzX or whatever random distro the loudest asshole in a thread is telling you to use. Again, you're a new user, you need simple, stable, and a huge community to reference if you have issues.

I suggest Fedora for new users now after Ubuntu shat the bed and soiled their crown. After getting comfortable with things, maybe look into what the difference is between Fedora and Cachy, and if that's of any use to you. If not, whatever, just keep using what you like. Distro hopping is for aimless people who don't know what they're looking for, or how to identify. Use what YOU like, and keep using it as long as you like it. Ignore the hype machine telling you otherwise. That's the point.