Seriously, it depends on your interests. If you like playing pool, join a pool playing club.
If you like keeping fit and go to a gym, that's already a club of sorts. Plenty of attractive women go to gyms.
If you like meditation, you could join a meditation group.
You could look up something you're interested in, and go and do a two day course, where you might meet a female with similar interests and have two days to chat her up.
You could increase your knowledge and skills, by doing other courses like a first aid course.
You could put your fitness to good use by joining a surf lifesaving club.
You could join a club like Rotary or Apex, and as well as networking with females, improve your public speaking.
Otherwise, enroll yourself in a course at a college or university, even as part time. You're bound to meet members of the opposite sex that way, too.
Honestly, the possibilities are endless, but can be tailored around your own interests. Why limit yourself to desperados on the internet?
Networking and expanding your social circle is the key. If you are doing what you enjoy, you will be happier, and naturally more attractive to women with similar interests.