Dressing/relooking at first.
May sound like nothing but in this world it's sadly important.
Take an example from the average, at least.

Then, be interested in every person, even the one you wouldnt usually talk to.
Each you have the opportunity to speak with, go for it. (well, assuming they're not too stupid)
What looks like a useless relation could lead you to know more interesting people. Like girls.