Mostly this. Research, research, research. There are a lot of resources available for people who are sound of mind and trying to get on their feet, but it really depends on where you are. Also I know you said you can't rely on anyone else, but before you go full homeless, have you stepped back and really evaluated if that's true? Grandparents, older siblings, aunts/uncles/cousins, friends, close coworkers, pastors, etc?
Even if you have to swallow your pride and feel uncomfortable to ask for help, those would probably be better options than anything you will find alone.