It cannot be solved, at least not in the way I think people want it to be.
We’re lonely because we are wired to avoid rejection and uncomfortable social situations, and because technology has given us hundreds of alternatives to sitting in the mess of connecting with people.
You can only solve it in your own life - by being courageous and spending more of your time in the physical world than in the digital one, willing to gro through the shitty feelings that come with being a human trying to meet other humans.
You cannot solve it for other people. There’s no sexy solution here. Meetup.com or whatever dating app or tech platform or not for profit will not fix it, because it takes individuals choosing the hard path and that will never happen en masse.