There are two components to insurance in the US. Liability and comprehensive.

Liability is to cover other parties if you cause / are involved in a crash.

Comprehensive is to cover your car if yo are at fault / only car involved.

Liability is mandatory in most states, comp is optional. In many states, liability is "no fault" where the two companies work out who is actually at fault trading $ amongst themselves.

Keeping comp on a car older than 7 or so years is a waste of money since it does not take much to push a car into the total loss category. The older the car gets the more likely you are only going to get a few thousand $ or less even for a car that is still running , driving and passes safety inspection.