That isn't what autism is man, and getting into the train of thought where you think there is something wrong with you preventing your u from "fitting in" is dangerous because it allows you to attribute a whole lot to it. Way more people than you'd think experience social anxiety on a daily basis. It is how you cope with it that will define you. If you call yourself annoying, it'll be really difficult to get people to perceive you as anything different, which can be frustrating. It's dorky and unnecessary to tell you to go out and do random activities to meet people. But go to the gym dude. Learn an instrument and start jamming with people. Find some fellow gangsta rap enthusiasts to get high and share tunes with. Things aren't as gloomy as you think they are, and your situation isn't as hopeless as you perceive it to be. Hope does start from within though.
Sparknotes: people will see you as you see yourself, Even if you don't want it to happen.