Is there something like an agent or business angel for small projects?

Just wondering. What if me and my friend are developers working on, let's say, a new crypto app or some other service that we find interesting and potentially hot. We build it from scratch without any help or 3rd party money. So at some point we finish the first MVP. It works like a charm, I'm happy as fuck. Now we polish everything and get ready to release the beta to the public. Meanwhile, we do nothing to actually find investors or potential buyers for the whole project. And we don't have enough money to launch and run it on our own in the early stages. Why is that? Well, because we fucked up in that sense. Again. We create new things, but unfortunately we are bad at making the profit. So what I'm thinking right now, is there anyone who can actually become a business angel and help launch/sell the project (for % of the final deal ofc), but who works with small projects online (something like Y Combinator)? Where do they live and what do they look like?

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