While I'm not the best at soft-modding, I am great at fixing software and such, and with the help of my father, who has experience with soft modding, I was able to get my then broken HP Pavillion into a stable working state and I even removed the bloatware that didn't mean to be on there.
Sounds like you are very young. PCs are an open platform. You can install whatever OS you want. It has always been like that before the zombie apocalypse.