Mint is a pretty solid choice for like 95% of people. If you’re already using LibreOffice then you’re halfway there, and I’ve been able to run all the games I want through Steam or Lutris (the Flatpak versions are better for compatibility IME). A lot of people use Bottles for games as well, but I’ve never been able to get it to work properly. I think I started using Linux full-time at about the level you seem to be at, and I didn’t run into any major issues.
Mint is a pretty solid choice for like 95% of people. If you’re already using LibreOffice then you’re halfway there, and I’ve been able to run all the games I want through Steam or Lutris (the Flatpak versions are better for compatibility IME). A lot of people use Bottles for games as well, but I’ve never been able to get it to work properly. I think I started using Linux full-time at about the level you seem to be at, and I didn’t run into any major issues.