Hi what is "the plan back home"?
In terms of the social aspect, there are non-drinkers there at uni. I am not a huge drinker myself and I met other people who are the same. Attending socials, you won't make friends instantly, but if you go to the same events, you are bound to see the same people who recognise you. It does take time to make friends.
If you really don't enjoy your course, maybe I would make new plans for something else. You don't want to spend the next three years studying something you hate. You will lack the motivation to do well, which will be reflected in your final grade. What were your reasons for picking this course?