Uprising accident (damaged) What’s the next step?

Hi, everybody, I got a hit on my car yesterday. At first glance, it’s just scratches. The police took everything in. Nevertheless, of course, I want the money from the opposing insurance company. I called my insurance company, which thinks that I should report to the opposing insurance company. The police told me yesterday that I can drive straight to a workshop, which regulates this via a form with the insurance company. If I have the opposing insurance company, then I can go to a workshop. g now calls, they will recommend me an expert. Should I perceive this expert? Furthermore, I still have an appointment with the doctor, because I got a pain in the evening and today neck. How do I proceed now? I have a lot of reading but am now only confused Thank you in advance for the help! Greeting, DG