Sorry to hear this, but I think that attending a class or interest group, or regular events where you meet people, may likely be as good or even a better way anyway. That's the only way I ever got into relationships, meeting people as a one off isn't enough time for me to know if I like them, plus I would be rubbish at interacting because of the pressure and embarrassment probably. But you are more extrovert, so I understand why you wanted to try this, as it may have been a structured way forward.
There's other options, and even though you didn't hear back yet about volunteering, you could find voluntary work too, there's plenty of help needed. And it's another good way to meet others. I think it can take a while to hear back about volunteering, as organisations wanting volunteers may have limited resources.
Find something positive to do about this, don't ruminate on it. What will you do to further your goal to meet compatible others?