Ask HN: Where to find other people to work on collaborative projects with you?

so I'm wondering if this is something that the HN community wonders about: If you were interested in doing a project (personal or otherwise), where do you go to find others who might be interested in discussing it together? Is this something you find difficult?

Some examples I can think of:

- you're interested in working in area X, but have little experience in it (say, edtech). Are there open projects that you can join to learn more?

- you're interested in doing a niche project (say, translating the Iliad). On the internet, there might be someone who's interested, but where do you find them?

- etc

Any personal experiences welcome :) Thanks yall