Durham postgrad accommodation

Hi everyone! I recently went to the postgrad open day - I absolutely loved the campus and city, but I'm really apprehensive about the accommodation situation. On the Ustinov College tour, the youngest person I met was 6 years older than me and I'm feeling really uncomfortable with the idea of living with men double my age. I'm doing my undergrad at another collegiate university and our postgrad only college is like a ghost town. I know there are a limited number of rooms for postgrads in other colleges, but I was wondering how likely it is to get one of these rooms and if factors such as age are taken into consideration. Ustinov also lacks a cheerleading team, which is something I was really excited to join - can I join a different college's if I end up there?
I'm also aware of the student house crisis in Durham and am unsure how I'd even meet continuing undergrads who need an extra housemate, or if this would even be a good idea as I'm unfamiliar with the city and don't know anyone there.
Thanks so much for any help!