I went back to college to take a business management degree and earned one. Thinking that I might do better as a manager. But since I have no experience as a manager, no luck in getting a job.
It is very hard to work on your own, and earn money. You need a team of people, you need investors, you need social and people skills. You need to market your product and SEO your website to get clients and customers.
I've worked on software projects that went nowhere because I couldn't get anyone interested in them.
I'm 47 now and figure my career is basically over. I could try Freelance after updating my skills to modern languages, build new projects and a portfolio, but I don't see the point when everyone else is doing that and there is a lot of competition.