I googled something like "how to get more fps in minecraft" and the first result was a minecraft forum post to which the only response was "install Ubuntu". At the time, Ubuntu had a .exe installer, so I thought it was just like any other program and installed it to my C: drive along with everything else. I think I did have the concept of other OS since I'd used both Windows and MacOS previously, so I figured it out after the reboot. It did increase my minecraft FPS from ~15 to ~30 on average, so I didn't have any complaints.
I stuck with that laptop until high school, when I got a new laptop and started dual-booting Windows for gaming and Linux for everything else, which is where I'm at now.