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

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...

My approach was as follows: I built a wiki software project and shared it on the subreddit r/selfhosted. The community liked the project, and it is now starting to gain more users.

The first users found the project through GitHub, but growth was very slow at the beginning. It took some time to gain traction, but I also needed that time to improve the project.

The project had been public for about a year without much attention. Only a few users had discovered it and started using it during that time.

Here if you are interested my journey: https://leafwiki.com/blog/fourteen-months-of-leafwiki/