Look - your startup hasn't failed. First of all, it's not a startup, it's just a project you've been working on. You haven't spent savings or taken debt or investment to do this. It sounds like you are maybe still in school.

Second, you put it on HN and on person signed up. This doesn't mean you failed. It is merely the first in a very long line of setbacks that every startup, both great ones and not so great ones face along the way. Figure out why no one was interested in this - talk to potential customers, tweak the product/landing page/distribution channel and tr again.

I hope this doesn't come across as harsh because projects become our babies and it hurts when no one else cares, but hopefully you can take a step back and realize there's a lot you can do to remedy the situation.