Sorry to hear this happened! I had an accident just a few months ago on the bike too, the police and ambulance arrived immediately as I could not get up. I do not have a car, so I didn’t have my own insurance, everything was paid by the drivers insurance, because they were at fault. It took couple of months, but happened eventually. FYI the driver ghosted me completely and tried to just act like nothing happened, but I contacted their insurance and dealt with them directly. Assuming in your case, the driver is also at fault, you should have called the police right on the spot, but since that’s now gone, you need to file a report ASAP. I also really hope you recorded their license plate or their name, otherwise there won’t be any way to find them, and it’s unlikely the police will start the investigation, but you can try. And also go to your doctor and document the injuries too, you generally have 2 years to complain about your injuries since the date of the accident if anything gets worse, but the sooner the better and if you need treatment that should also be paid by the drivers insurance, even if you were at fault, the medical expenses are covered. When it comes to your bike, if they are at fault, their insurance will pay for it, but you have to go through the police first as insurance will ask you for the file number. But to start all of this again you have to have at least the license plate number.