2) I hear that you scratched your own itch. When you had the itch/problem, what did you do to see if someone else had solved it before you started building? If you “only” did a quick google search, then you can try to rank for the phrase you searched for (which might be super hard). Did you post on Reddit/slack-group - if so, build a presence there so that when other people ask that same question, you can be there to help (and mention your solution)
3) try to meet people in real life who might have this same itch/problem, and talk to them