I was totally headed down the alt right pipeline. Throughout highschool I was depressed and lonely. I lost my faith which sent me to the online atheist community which ran out of content, so they started attacking feminists/sjws. I also just distrusted women because I got molested as a child by one and no one took it seriously. This had primed me to just eat up all the content from the MRA/antifeminist crowd. The youtube algorithm, which at the time was absolutely unhinged, pushed me to racist content which I just parroted because I didn't know any better. I didn't understand why things were the way things were, but I was taught who to blame.
What saved me was getting friends. These friends shattered my preconceptions, which sent me to the library, which got me talking to more people, which got me reading more. By the time I finished high school I just became utterly incompatible with the person I used to be. I couldn't take back the things I said to people, but I could join their protests and speak up for them when I heard some heinous shit being said.
It's like a boxing match where the republicans pull a knife out of their glove before the round starts and the democrats just pat themselves on the back while congratulating themselves on the clean match they're about to have.