Safety is your priority. Move to a safe area and call the police to file an...

https://dlf-ne.org/what-if-the-other-driver-changes-their-story-later-a-paralegals-guide-to-protecting-your-claim/

Safety is your priority. Move to a safe area and call the police to file an official report. See a doctor immediately, even if you feel okay. Capture photos of the damage and note witness contact info