I totally understand you. I have been in your shoes. My father died just 4 months after I came to New Zealand. I couldn't attend his funeral.
It's hard to make new friends here (it takes time) and usually people have to find their own community.
Another thing that came as a surprise for Brits is that Australia is not cheap. They are shocked with prices of food, rent, power, real estate  etc.
First when they come they are amazed with Australia. It is beautiful and yes homes are big, weather is nice, everything looks perfect. They can easily see themselves in those big homes, 4 WD etc. But it hits them hard when they realise that their dreams are on a long rope. And they start to miss relatives and friends. Emigration is never easy. After 10 years you'll be OK, ha-ha.
And we spend a lot of money to go back to visit relatives and friends every now and then. I could go on many luxury cruises for the money that I spend for 6 weeks in Serbia. But we choose to go and visit them...After that trip we have mixed feeling...regret and joy that we at least have seen them. For us older we never know if we will see them again. Every time I go there at least few people have died...That's life for first generation of emigrants. But we are lucky we can afford to visit. Long time ago people were not able to go for like 20 years. One man told me he would never recognise his own brother if he met him on the street. Sad...