Suse linux. I didnt know what partitioning was, so I partitioned my hard drive 6 times and messed up my bootloader. I didn't know what that was too, so I had to figure out how to do all this....with a Suse linux disk from the library.
Later on, I discovered Wesnoth and that was an awesome game. I also played around with Ubuntu 6+, Slackware, DSL, and a host of others. Its been a fun ride. Nowdays, I like PopOS and Manjaro (steamdeck). Most anything debian.