Basically, the theme here is "If it's to be, it starts with me". You need to put forth some effort to meet people. It's about being around people that will get you to meet people. Of course it always helps if you share common interests, but you have to be around people to make it work. Friends are not handed to you, they come about from taking the time and putting forth the effort to get to know someone.
It is difficult to find quality people to hang with, I usually host a game night about once a month with people from work, family, good friends I have kept it contact with. We play board/card games like Spoons, Apples to Apples, basically we play simple, easy to learn games for multiple people. Drinks help relax and get people comfortable, but not necessary. We have people bring their favorite drink, but we provide the snacks and Jell-o shots. It's grown to a good size of 12-15 people and those that come always want to know when the next one will be. People we invite ask if they can bring other friends, sisters, brothers, etc. These people usually become part of the core group that come on game night. The faces have changed over time, but new ones are always there to get to know. It's to the point were we almost need to split the group into either two nights or two different tables with two different games going at the same time, but most games besides Werewolves, which plays up to 18, only play up to 10 people.
When my wife and I moved to Green Bay, we didn't know anyone, but we would say hi to a few people in passing that lived in the same apartment complex. Then we decided to invite a few of those people for games. We picked a neutral area (the lounge in the apartment complex) so no one would feel uncomfortable. We had a few drinks, played a few games, had some laughs, got to know each other, it was fun. The next time they wanted to bring a few friends and it just grew from there.
We always host game night at our house, due to us having children and it's just a popular as it was seven years ago. The people have rotated just like the games, but it's still something everyone marks their calandars to come.
The point: We took a chance and made an effort to get to know a few people and it grew from there.