Do you have a job, or savings, or can your parents subsidise you? You need to consider that you are not only going to need extra money just to pay the rent, you're going to need extra money for food, transport, clothes, equipment, activities...
The normal solution is to look sadly at the lovely expensive accommodation you wish you could afford but can't, and choose between the cheaper but less nice options which you can afford. It is completely normal for students and younger adults not to be able to afford to live where they'd like to.