Accident damage, causer is not the holder

Tach, just had an accident where someone from the side street took the lead. Scattered left behind me police bulli, in about 150m zipper procedure. Briefly accelerated, a 5 BMW pulls right out of the side street and slows down. I didn’t think anything about it, suddenly he prefers a good 2-3m further ahead, brakes again appruptly and remains right in front of me. Had to get into the iron and noticed that I was only slipping and the BMW is getting closer and closer. Again from d he brake down, evaded and with the right front wheel wheel stroked the bumper of the BMW. If I hadn’t evaded, I would have hit him fully. Witnesses: Police in the Bulli Result: Advance failure with accident, accident report I have in my hand damage: Shram and bump on the wheel wheel, bumper stands off from the fender…. fender must be replaced and painted The driver gives to brake and accelerator to have kicked at the same time. He is not the holder and wants the damage What do you suggest? 1. In the Audi Workshop, have accident damage eliminated and send invoice to the driver? 2. Report to my insurance company, which reports the damage to the opposing insurance, whereby the liability of the holder pays and the driver can buy back the damage from the insurance company?!? 3. Get expert reports and send them to the opposing insurance company or the driver? 4. ….. ? Can I charge a replacement car additionally? I have to drive 60km every day…