I have a MVP and 19 singups, now what ?

I'm currently developing a project that leverages AI to generate fully personalized courses based on user inputs. At present, each customized course takes approximately 3-4 minutes to produce. The process begins by capturing user inputs as a prompt, then creating an assessment to evaluate the user's existing knowledge on the subject, followed by generating a highly tailored course.

Right now, my primary goal is to gather brutally honest feedback about my project and understand how I can establish meaningful connections with users. In line with Paul Graham's advice, I aim to initially build this product specifically for a small group of 10-15 users.

I've tried using Reddit to reach potential users, but unfortunately, my post was blocked. I'm open to suggestions on alternative ways to effectively connect with this initial user group. Any tips or advice to help me achieve this goal would be greatly appreciated!

EDIT: Last night, the app went viral on a small scale, gaining over 100 users and courses. However, around 5% turned out to be bad actors, which forced me to shut it down temporarily. I’ll be adding safeguards to improve it and will get back to you once it’s ready.