This is a great article where somebody systematically analyzed indie hackers interviews to figure out the best channels for user acquisition:
https://entrepreneurshandbook.co/top-15-acquisition-channels...
replies(2):
https://entrepreneurshandbook.co/top-15-acquisition-channels...
It is better to actually read through all the anecdotes you can find, seek out the ones that match your audience, and compile your own data and conclusions.