Why are you defending Hamas for using civilian areas to stage military attacks against Israel? According to the Geneva Conventions, that makes those areas valid military targets, provided the civilians are given fair warning to flee, which Israel does.
Collateral damage is a regrettable side effect of warfare., and every sane person wishes it didn't happen. But you are spinning the issue as if the IDF is singling out children for murder, which is dishonest of you.
If Hamas doesn't want litttle Palestinian children killed, they could end the conflict by surrendering and return the Israeli hostages. But they are fanatics who hate Jews more than they love children.