your current difficulty is temporary. You will soon get to know the culture in your new country and find a few friends.
What is more important though, is that you might have overestimated what PhD worth. You may very well end up regretting trading your fun life for that degree.

Why did you choose to do a PhD? definitely not to have a car and house by the time you graduate.
So, why does it even come unexpected to you?
Looking back at why you did a PhD, do you find those expectations realized?