I haven’t done this myself but if you google you’ll find blogs of developers who have. I think the main path is to become an expert in a niche, then go consult

I haven’t done this myself but if you google you’ll find blogs of developers who have. I think the main path is to become an expert in a niche, then go consulting/freelancing, then move to a low cost country (e.g Thailand) and pick & choose the work you take on. Good luck