>so far I haven't made a single public post about it
Well, now you made one. Congratulations.
Maybe you need to look at the reasons you feel unsure about promoting the project. You seem very eager to get stars on Github (and let's not get into the GH situation, nor "AI", nor the fact that your open source project relies heavy on proprietary models).
I'd suggest you ignore the scoring system for the moment, and just write from your original enthusiasm about the project. Leave marketing to corporations that can afford marketers.
Stars and upvotes and likes are addictive metrics, and can have a deleterious effect when they don't show. And yes, stars decide how high you rank on Github (see parenthesis above), but that's for a later stage. It begins with writing the first post — and for that, again, congratulations 🙂