As I am the only (known by me) foreigner in the neighborhood, everyone knows me but I don't know them.
I used to socialize with some female neighbours but they are all gone now.
The new ones don't even bother to introduce themselves.
Depending in which area you live, the opposite gender will not greet you but you can start first with a smile and say something in Arabic, if you master some phrases.
Don't expect that the other one starts first.