Most meetups in Western countries, especially drinking/bar crawling ones, are sausage fests to begin with. No miracles there. You can get girls' phone numbers though, then set up dates and proceed as usual.
If you have a hobby, join a meetup group and see what the ratio is like there. I've never been, but I've heard that book club meetups are full of girls.
If you have a hobby, join a meetup group and see what the ratio is like there. I've never been, but I've heard that book club meetups are full of girls.