Those two people might be a start, and it's a low barrier to their participation to say you want to try a nearby cafe for lunch tomorrow if they're interested.

Longer term: make opportunities to occasionally talk to other people. Join a club, join a fitness group of some kind, take a class at your local library. It's got be something in person with enough repetition with the same people that everyone involved can overcome inertia enough to talk.

Try to say 'yes' should an occasional contact invite you to something, because it's pretty common that you won't get asked a second time if you pass on the first - I assume that's because we're all scared stiff that no-one likes us.

I need to take a heaping spoonful of my own advice here, but: yeah, kind of yes. You don't have to think of them as the people you've been searching all your life for, but to meet people, you need a source of people to draw from. Those two people you talk to on a semi-regular basis are entry nodes into the social network.