I assume you aren’t going to uni in London or Brighton but even if you are, halls are drastically overpriced. Look for houseshares in your area, you will find something much cheaper. You may still need to find money to cover food etc but it won’t be £500 a month just to pay your rent. If you get involved in your uni societies etc I wouldn’t worry too much socially about not living in halls, I don’t know how anyone affords it.