I hate to hear that. It does sound like you’re putting so much pressure on yourself to find someone that maybe you should try to relax and believe that someone will come along. Try to get out there more and go to different places, then find opportunities to start a conversation with women. If you have a dog maybe walk it in a neighborhood, go to the gym (if you’re into that), volunteer, or do some kind of activities or go to events where you could meet people. You could also keep trying the online dating thing, maybe go on different sites or try talking to women from slightly farther away. Even if you go on a few bad dates it’s still a way to pass the time and you might make a friend that’s a girl out of it, which would open the door to meet more people.
Sorry if this isn’t helpful, I tried to think of everything I could to help. Just remember the right one will come along!