You… can’t. At least not here.

Lemmy.ml currently (and probably for the forseeable future) doesn’t allow the creation of new communities. You could ask the admin to create a community for you, but I can’t say more beyond that. I don’t know if that’s okay or not, I don’t have an account on lemmy.ml.

Another alternative is to create an account on another instances that allow new communities and create a community there.