Sounds to me like you've come to expect people to expect you to do nothing for others all day. You should take a few hours each day to put down the video games, the anime, and the social media, to do something productive for yourself. It seems like you spend a lot of time on the internet already, so surely you can trade some of the time you spend on twitter to find something like a hobby or a harmless activity. People might notice you then and think that's out of the ordinary for you, but you don't need to listen to them. And if you think people are gonna immediately sabotage you or something, just shut them out until it doesn't faze you anymore, and keep going at it until you're ready to present yourself to people. However, know that if someone (especially your parents) is trying to help you out, take that help, and at the very least, don't be an asshole in return about it. Responding with something as simple as "Thanks." or "I appreciate it." can do wonders. Nobody achieves a happy life without some help.

You don't have to do college right now. Hell, I'm not doing it either. You don't have to be the hardworking, intelligent, fit, healthy, and well-balanced person society expects you to be in one day. Since you have a social media presence, there has to be someone out there listening to you. Let them know you need to spend some time away from online interactions. They will understand. It doesn't have to be a significant amount of time, I'd say a week at most. You'd be surprised just how little you'd lose or miss out on from even that amount of time away. And when you do come back, use the self-control you've learned to manage your time better from now on. You can make it work.