People that wander for a living usually live by a combination of charity and payments for odd jobs. For example, a small farmer might gladly part with some old clothes and provide a few meals and a bed in exchange for help with some tasks, and I've heard about people with a preternatural ability to couchsurf from city to city.

A lot have taken up being digital nomads. Not a bad way to make a living off you can get good Internet access somehow.

Whatever you want to do. Go spend a season helping out ona farm in Hawaii, then go help build an ecovillage in Australia, then spend some time walking around New Zealand washing dishes and bussing tables, then off to India where you'll build rope bridges and tree houses for a sustainable community. After that, you can go to Thailand or Vietnam and teach English for a little while, before making your way into the Mediterranean and spending a year and a half on the island of Bozcaada helping an old man repair out building and herd goats.

That's literally what my friend did for over 5 years after one day he just decided to leave and had just enough money for a plane ticket to Hawaii from San Diego. Everything else was work and accommodations he found along the way. The only reason he came back was because of covid, and now he's an RN and makes a bunch of money and he hates his life and is in and out of rehab.