The number of children who are killed by cars as pedestrians or bicyclists is much lower. In 2021 for example it was 176 pedestrian children and 38 bicyclist children [1].
[1] https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/...
I can say though that the few times I've ridden on the road with my children were the most stressful of my life, I have never done it since, and it made me completely understand why I no longer see any other children or parents doing it.
[1] https://www.vox.com/23784549/pedestrian-deaths-traffic-safet...