I don’t know what I’m doing wrong?

Edit : I posted this on the wrong acc my bad

I founded my startup when I was 19 (which is a year ago). I remember getting into the incubator after only 20 minutes of the conversation. I remember when they helped me form a team with people way more skilled than I am and I’ve watch them cheer this company on.
Over every meeting I’ve been to with potential customers in the space they agree it’s a good product but it’s just been referral to referral like shoving dead weight of their shoulders.
Today I was at my local Impact hub for my country I met with some board members and we had discussed in length on what we were building.
But it’s always the same thing they say it’s good and move on I’ve sent countless emails I’ve had so many meetings (cause we are into B2B) travelled just to see one person now I’m on academic sabbatical cause I was sick and I’ve been spending it trying to find someone anyone to take the next step with me and I’m worried the startup is going to fail and I would have failed everyone who believed in me.