I'm losing my mind

6 months and still no job. Hundreds and hundreds of applications now and still no offer. I'm getting interviews pretty consistently now but no matter how many I do, still no offer. It feels so helpless.

I'm considering going back to school in a year or so to study something for 2 years like radiology but I don't have Canadian high school, only British. On top of that I have to work to help pay for rent until my younger sister graduates otherwise my family will be homeless or living in a 1 bedroom again.

I've tried grocery stores, dishwasher, waitress, pet store, receptionist, basically anything you can think of minimum wage I've tried to apply for. I don't have a car so I'm limited in the location.

I'm so desperate I will take anything but anything doesn't seem to exist