I hit someone’s car by accident and left can allah forgive me

I hit someone’s car as I was leaving a car park, I checked the damage and I couldn’t see any. As I was about to leave I had a quick look again as I was driving and I saw a small crack. Mistakenly I left the car park and went home, but then I couldn’t stop thinking about it. So I tried to find if I have committed a sin that Allah won’t forgive me for. While searching I saw a brother asked a similar question and the answer was that he committed a sin that Allah won’t forgive him for. I went back to see if the car is still there or not, but it was gone and now I’m so scared! Will Allah forgive me? And what can I do now I can’t find the person and what will happen if they don’t forgive me.