This is a very real pain point, especially for people coming from a technical background (which I assume is the majority of people who make open-source projects??).
What's worked for me initially is going to online communities that are actively talking about my problem and contributing to the thread ASAP. And by contributing, I mean helping the person who asked the question immediately solve their problem, and then, if my solution automates a meaningful part of that pain, then sharing a link to the tool.
I open-sourced the tool that I've used in the past to find those active threads so I can start to build an audience and validate my concepts: https://github.com/obris-dev/openmagpie
What's worked for me initially is going to online communities that are actively talking about my problem and contributing to the thread ASAP. And by contributing, I mean helping the person who asked the question immediately solve their problem, and then, if my solution automates a meaningful part of that pain, then sharing a link to the tool.
I open-sourced the tool that I've used in the past to find those active threads so I can start to build an audience and validate my concepts: https://github.com/obris-dev/openmagpie
I wrote about how I get my early users (to get at more of the nuance) here: https://openmagpie.ai/blog/posts/get-first-users-no-marketin...