If you're autistic or just plain weird in some fundamental way, you should completely stop caring about turbonormalfags and their opinions. Instead, admit that you are an eccentric and craft a big personality for yourself based around that. You just have to get base-level adulting down well enough that you clearly aren't close to having any financial problems. Very easy as long as you aren't a consoomer. Then just be like IDGAF if people question your life choices. Most of the time they won't, because they already know that you're just going to be like "IDGAF, I'm fine" and they'll just leave you alone. Which is great, fewer normalfags to deal with.
Always be kind by default, but also unapologetically weird and a little unhinged. You want people to see you as the kind of person who would throw a rock through their window if they intentionally fucked you over in a big way, but not the kind of person who picks fights or insults people for no reason. Subtly let narcissists and passive aggressives know that you see through their facade. Don't complain about things often, and don't be afraid to point out some of the obvious facts of life that other people are too afraid to.
There are plenty of people out there who find free spirits alluring. I'd even say that half of people are more or less fine with me, including many people who live a different lifestyle from my own. I'm a 30s sperg who stims constantly, and was headed down a similar path to what is described in OP's pic. But I turned things around once I let go of my preoccupation with normalfag society and just committed to being an eccentric hippy. Take responsibility and own your weirdness.