I would recommend you check out https://www.cofounderslab.com. See if you can attend one or more of their Matchup Events if possible. If you have something to offer and you can get other people interested in your idea, you might consider that validation of what you believe to be a great opportunity.

However, if you attend some matchup events and you can't seem to get anyone interested, perhaps this is validation that the opportunity isn't as exciting as you might believe it to be.

Beyond this, I would recommend getting involved in a local startup community and engaging in more networking. You may need to expand your network in order to find the partnerships and relationships you need in order to become successful.