Seek for helpful witness: Car accident

Hi my fellow bears, I am Jerry Pan, a second-year undergrad major in CS and Statistics. I on my scooter was hit by a car in the intersection of Durant Ave and Dana St 3pm this afternoon in front of the blackwell student dormitory, and I was bleeding in knees and elbows. Yet, I let the driver go as I was in a hurry for school, and only copied the driver's California ID, car plate, and driver's email. Later today, I wrote to the driver's email for compensation of my scooter but got no response (I tracked the driver opened the email 9 times). I called 911 asking for help but was told the driver license and car plate number are confidential information that couldn’t be processed. I sincerely wish to find the witness at the incident and ask for your help. I'm going to contact my attorney and set up the case for sue her. Could you help me to post this case and seek for relevant witnesses? Really grateful for help.