I think you're selling yourself short if you believe you "can't sell it neither to customers nor to VC's".

I expect selling to VCs requires a certain amount of posturing and hubris but doing some Customer Development should be possible for anyone. Customer Development is not sales. You might find it difficult at first but when you realise you're offering something of value to someone it feels a lot better.

Unless you can reveal what market you're in, the advice you get here is going to be pretty generic. If we knew that you were interested in $FOO then a few folks might know about $FOO meetups or conferences that you could attend. Also, bear in mind that you will still need some sales skills to convince a someone to join you.