As an autistic person myself, in my experience, you don't. You just wallow in misery on a regular basis and try to distract yourself with things that help, in my case, video games. It's no wonder our suicide rate is so high, if I'm being honest. Close to four times as much as people in general and nine times as much as "mentally healthy" people.
The rates of suicide attempts and suicide are increased among individuals with autism spectrum disorder (ASD), according to a study published online Jan. 12 in JAMA Network Open.
www.google.ca
But if you were seriously looking for an answer that would help you "be functional" so to speak, you might have better luck in the recovery section. At least I know I hang out in this section because I don't have hopes things will get better and I don't have an interest in doing so.
I don't know if this helps, but at least you're not alone in your struggles. Neurotypicals find it difficult to understand our problems and they may often say the they aren't real, but I assure you they would find it a real problem if they lived in a society with a majority of people who thought like us. Social isolation is a terrible thing to live with and even people with very little material wealth typically have close relationships with other people to keep them going.
That said, one thing that might help is if you somehow found a community of autistic people that share similar hobbies to you. Which is a tall order I know, but I actually found one myself for my own hobbies. Don't look for a group of autistic people in general, which is what I did, because you still won't relate to them without a common interest.