Apartment rent in freising

I am looking for a shared apartment or most preferably a one room apartment of 32m between 400 and 500 euros thanks I am a new student that just gained admission to study nutrition and biomedicine at the technical university of munchen and will be starting my program in October.
I am a very neat person, non smoker and very friendly , I am a Nigerian and been resident in koln Germany for three years now.I would like to have a long term contract rent to enable me finish my studies comfortably if there is any chance of getting such apartment in freising which is not too far from the technical university of munchen please Iet me know I am really in need of such accommodation to enable me start my studies on a good note and also have a peaceful serenity which is very important to me thanks will be waiting for a favorable response