Request for single apartment, starting December 2021

I am an international student from India, who is coming to Gottingen for taking up work to pursue a PhD at the Gottingen University. And I am hoping to travel and reach the place by Dec 5th or 6th. I would like to have a single apartment, preferably close to the University campus. Flatshares are also okay, although my first preference would be a single apartment. I know it is a bit late to make this request, given the date of travel is so near. But it would be very helpful if I could find and confirm an affordable accommodation before I travel, so that I can directly come to the place without having to stay in hotels until I find one.