I(21m) got an offer letter to join Brunel University of London. Im going to pay the deposit money to confirm my seat tomorrow, but now i feel anxious about what will happen during my period in the university. Like, what if i fail in subjects?, What if i don't make any friends or connection?, Will i be all alone, is the university best for me?, Will i get a job?.

I really don't know what to do about it. Im starting to tear up thinking about it.