You are in Dallas? The main redeeming quality of Texas is the music. I wholeheartedly agree with this suggestion.

Also going out to the same places at the same time can pay off, you will make acquaintances and some may become friends. I see a group of old guys at the cafe I go to for coffee, pretty sure they are only friends because they go get breakfast at the Cuban place and ended up talking and sitting together.

I will say though, almost all my friends I met as adult came from work or from them going out with someone in my family. The medium level friends you are probably looking for. Do you not have work?