I absolutely get what people are going through because I have been through it myself - in fact I'm still going through it 10 years on. I left the UK with 1,500 pounds in my bank account and I didn't know a soul in Australia. All I had was a backpack with my belongings in it and I didn't even have a coat! I left my friends and family behind and there are still days that I cry for hours because I want to see my Dad. I have had some really, really awful things happen since I arrived here (starting with the death of my Mother) and there are still times when I question whether I made the right decision.
However, unlike many, I don't blame Australia for this, it's just life and it's something I can learn from. The absolute truth is that we are responsible for everything that we attract into our lives and only we can make the changes that will make our lives better. So many people on this site complain about this and complain about that, but they don't actually take action to change their circumstances. They focus on how awful life is, instead of how amazing it could be.
If you look at the world with negativity then that is exactly what you will bring in. I certainly wasn't suggesting that you are one of those people, however I did suggest that there are most definitely things you could do that might help you meet more people.
You don't need to walk around with a sandwich board to make friends. Just put yourself out there with the right attitude and it will happen. It's all in the attitude. If you say you can't, then you can't. If you say you can, then you absolutely can. And yes, it does take some effort to do this!
I just wish that some of the other people on this site would consider the effect their negative attitudes are having on their experiences before being so quick to write off this country and the wonderful things it has to offer.
I still, of course, hope that things get better for you and I know how much courage it must have taken to start a new life out here. :)