Need a replacement tenant by October 3rd

Hi, I am currently set to retake a semester at University as I failed a few modules last year, problem is I only got my results this week but I have accomodation booked for the full year and absolutely have no way to afford it and the University haven't got back to me about my accomodation and so I'm just taking precautions.

I need a replacement tenant by the beginning of October in Liverpool looking for accomodation, it's £145 per week paid across 3 installments, or at least some advice on what to do if I can't find a tenant.

It's an en-suite and very close to the University of Liverpool and John Moores campuses