Do you have a particular investment thesis/focus? I think many early-stage startups are hesitant to take investment vs. bootstrapping unless that investment also comes with some significant domain experience, scaling advice, connections, etc. and is from an investor who's well-aligned with their vision.

For HN specifically: maybe helpful to write up a high-level summary: Who are you, what's your focus, what kind of startups are you interested in helping? In this forum the anonymity-factor is higher (vs. twitter or other venues) so that information is probably more important here.