From my understanding, meetup.com is just a popular site that people us to let people know of local gatherings and groups. I assume it is international, but I could be wrong. You can sure try it though to find out, no cost involved.
Best advice I can give, with my limited experience, never let a little thing like a failed romantic attempt get you down. All we can do as men is find a woman you are attracted to and ask her out. If she accepts, great; if not no biggy, just move on. Don't let deep emotional feeling sink in that early or it will discourage you from trying again. We are men; so we can take it like a man