When I was a kid, we used to visit relatives a lot. I was 12 as well and listening to adults talk about boring stuff wasn’t cutting it anymore. Most of my relatives had PCs, but none with any games I’d be interested in. So I took my mom’s 8gb USB stick and turned it into a Linux Mint bootable usb.
Now, keep in mind that I didn’t know that much English at the time and honestly I’m amazed I managed to do that, but… I wasn’t aware stuff on the stick would be overwritten, and let’s just say my mom wasn’t too pleased!
Didn’t even solve my problem, since the only game that would run was Terraria, and that with like 5 fps on most of the computers I tried it on!