Questions about accident with a hitchhiker

Hello, a few days ago another road user rammed me while driving sideways. No personal damage. The causer of the accident chose to run away. Actually stupid because I followed him for some time and noticed the license plate. The police then visited him at home and he admitted the allegations. Alcohol was not in the game. To the questions : 1. The damage is not particularly high contrary to expectations and the accident opponent has at the police The police have to report the accident to the opposing insurance company themselves for the purpose of speeding up the process. So send an estimate to the opposing insurance company. 2.Can I also break a “package” with the opposing insurance company? I have at least other costs besides the damage. Drives to the car dealership and the police, as well as postage costs. If there is such a thing as how high is it then? Or does the lawyer come into play again? 3. Is there an automatic trial at a driver’s escape? 4. Can someone tell me something about the amount of punishment my “opponent” has to expect? Of course just about. Thank you for the answers in advance Mando