I'd say that depends a lot on what you want it to do. Are you looking for a very simple and easy desktop experience? Go with Ubuntu or one of its many derivatives. Do you pine for the glory days of RedHat? Go with fedora. Do you want maximal control over every facet of your computer? Arch.

I recommend Mint Debian edition. It's pretty easy to get into, without a lot of the nonsense Ubuntu comes with.

I personally use openSUSE Tumbleweed, which has worked pretty well for me for the last 5 years or so. However, it's a really bleeding edge distro and not Debian based, so you may have issues finding help (I'm available if interested).

Look around and find something you like. Anything Ubuntu, Debian, or Fedora-based should be pretty safe in the "getting help" department.

Mint Virginia. It's easy distro to navigate. Has all the drivers. It's quick and simple.

Every person is going to have different opinions as to what distro works best for them. What exactly are you looking for in an ideal operating system?

Best would be to try different ones and see which one works best for you, but if I had more of an idea of what you're looking for and what kind of hardware you're using, I'd be able to recommend some distros to try out.

Are you a power user? Do you prefer stability or always having the latest software? Do you value ease of use or do you consider yourself more of a power user? Do you want to learn how to use the Terminal, or whould you rather avoid it and use graphical tools instead?

Also different desktop environments, even on the same distro will provide vastly different experiences.

NixOS is the tidiest. Having all your configurations in one or two files is excellent