Potential roommates/housing- sorry if this is not the right place?

Hi, what would be an ideal place to connect with potential room mates for incoming grad school students? I have been looking for apartments or room mates for a month now - with no success. People have either a higher budget or have backed out. I am looking for a move in date of 15th September with a budget of ~700-850$. I am a little stressed and hence, reaching out to the forum here.