Ubuntu, I think. This was around 2010, when I was just ten years old. Back then, we had Unity as the main desktop. Left Linux and settled with Windows for some time. Tried to move back to Linux in 2020, starting with Fedora 30. Then I tried around other distros, but still stuck around with Fedora. Moved to NixOS after the RedHat fiasco. My main laptop died, so I’m using my dad’s crappy outdated laptop with Guix + Nix.