Car damaged by dealer

Servus together, today tomorrow something “interesting” happened to me. I drove to change tyres. We agreed that I would wait for the change and then take the car with me. After 20 minutes he came to me and said there was a big problem. I thought: well, probably the brakes have to be replaced, or there is some lack. Then the master continues: An apprentice has your car damaged- bumper, headlights, fenders have to be replaced. I ha I was looking at the car and in fact everything was damaged. Supposedly the apprentice slipped the clutch and and he kicked my car in the hall against the lifting platform column. Well-shit happens I thought originally – I get everything repaired anyway + next customer service for free. I also rented my car until the repair runs – so everything was fine. Later, however, I thought about everything again. I paid the car in cash, so a lot of money, and had to drive it for a while. But the real problem is, I can’t sell it as accident-free afterwards – there’s a certain reduction in value. I’m aware that something like this can happen, and I have nothing against the workshop. We already know ourselves (3 Volvos I’m talking about there), and otherwise I’m generally satisfied. But now I don’t know how to proceed. What would it be appropriate to demand compensation from them. I’m not quite sure myself. I’m looking forward to every one of them. Tip