20 Year old female looking for housing for @2years while attending VHS Heidelberg

I am an American high school graduate who will attend college in Germany but first needs to complete 2+ years of ABITUR.  While completing my ABITUR, I am seeking housing for myself. I speak German fluently and have been doing so since 2015.  I have lived in Germany previously when I was 18 and have been in the United States for the last year.  I have returned to Heidelberg to start the process of going through pre-requisities for attending college eventually in Germany while also working  a job on the side to help with bills and the like.