In Murica, apply for SS(D)I. You need a condition that sufficiently convinces Our Powers That Be that you can't wageslave. Then, they'll give you a handler that will guide you through the long, annoying process. Not that you need to do much beyond paperwork and a visit to one of their doctors. After 6 months or so, hopefully you qualify on the first try. Most don't, then you probably need to get a lawyer and try try again. I was fortunate enough to succeed first try because I'm so autistic.
Or in the US, you can get Temporary Welfare. This is a few hundred per month for anyone not working or on unemployment. They will bug you constantly to find work, put in applications, and do monthly meetings at their gov't buildings to further break you down. This isn't worth it, but it's something.
Also, if you're low income, you can get SNAP (Food Stamps) and Medicaid (Free healthcare that's often better than what wageslaves pay for). I recommend this, even if it doesn't provide much.