Whether or not a person can work in the US or Europe will require research and the only person who is likely to go through that effort is the person who wants to work in one of those places. I might read something about the emigration options of Indonesia's residents, but I'm unlikely to research it.

Following people on Twitter and posting to Hacker News is probably easier than doing the research and paperwork that is required to emigrate from Indonesia. It's probably easier than working with clients or building a SaaS. Partly this is because posting online and using Twitter successfully is the normal case and building a business and relocating around the world successfully is the exceptional case.

Doing the hard things means risking failure in addition to doing a lot of hard work.

Good luck.