If that's the only damage you got count yourself lucky! And... if you see a deer cross, there's almost always another deer following... or ahead. 50/50 on that score. I stay on my brakes if a deer crosses in front of me for that reason. I make darned sure before accelerating.
edit to add... Small white tail deer herds are matriarchial and usually a family, grandma, grown daughters, offspring. The lead or dominate doe will cross roads first (streams or any choke point) followed by the rest of the group. I’ve had several deer cross a road in front of me before… one at a time. By then I was at a dead stop.
Also, white tail deer in the SE are pretty much nocturnal during hunting season. They don’t move during the day unless distrubed. They wake just before dark and usually travel to water first. Which sometimes involves crossing a road.
I’m very cautious an hour before and after sunset or sun rise. That’s usually when deer are moving. 95% of the deer I see are during those 2 time periods.