So I usually go to bars/clubs on weekends. Problem is that I am just by myself. I see lots of guys with their friends. They simply walk to group of girls, talk with them, separate out 1 or 2 and may be take them home (?) or get numbers.

I am new to this city and dont have any friend who could be my wing man ( men ). Beside I am very average in terms of looks. Pretty much foreign.
So unless girl is alone by herself ( which is very very rare case ) how can I approach and talk with them ?