Need advise on new startup. ( I will not promote)

I have been working on an app, that basically like social platform and potential to scale. I have a minimal working prototype. I wanted to pitch it for funding to full develop it. Tho, I wonder, if it is advisable with my mininaml prototyping. By minimal, I mean I can show you 60% of the functionality, tho it does not look fancy or whatsoever, not UI design. And I am currently not good at making one, so gotta need to hire someone or so.. I would like to hear some advices on how to proceed from where I am.