Does God sometimes fail to protect children?

Here’s what I have to say about this: Father God sees a war break out to protect the child, but if He and the angel lose, the child will suffer, and the demon will establish its kingdom within them. Most of the time, the demons win because of sin and the adversary accusing the child of their sins. He will even bring up the sins of the fathers and forefathers. That’s my stance on it.