Hey, sounds like you need some cheering up rather than other people's opinions and advice.
I am in the situation you were in nine months ago, I am new in this city and pretty much on my own. I know how it feels - I suppose we all do!
It's big and scary. People may seem nasty and corrupt and cheating (and some of them are, I have been conned already) but beneath the surface, they can be warm, friendly and extremely hospitable. I was in a bar the other day where it was the owners birthday. It was just a few of us and his family. Without even asking they sent over cake, champagne, food etc. They just assumed that we would like to be part of the group, and we spent the night chatting, dancing and *ahem* flirting away... unbelievably friendly.
I have found this after one month of being here.
Where are you from? Is it big and scary like the city?
I'm from a town with a population of 20,000. Compared to the.. what? 12 million here?
My point is: if I can do it, then anyone can. Including you.
Keep your chin up, and if you fancy having a moan over a beer with another semi-disgruntled expat then drop me a line.
I'm British.... I'm a professional moaner.
Good luck,