Everybody sort of dreams this kind of life, traveling, immersing in different cultures, mixing with different people, earning without a boss, and so on.
I've watched vlogs of digital nomads, too. I think you've got a lot of options in this digital age. You can create videos, write articles, maintain a website, do programming projects, create designs for apparels and other stuff, do tutorials or teach, do live streaming, sell photos, sell stuff, trade, and yeah get involved in affiliate marketing and dropshipping.
I used to follow Eight Miles from Home on Youtube. They're a digital nomad couple, and now with a daughter, residing on a beautiful island south of the Philippines. They have this video which you could learn some tips from:
https://www.youtube.com/watch?v=WrfDhMJWa18.