I have zero interest to comparing the awfulness of the IDF with the awfulness of Hamas.
It's worth pointing out because many people still hold the implicit assumption that the IDF is just an overzealous army or some other whitewashed nonsense while Hamas is an unsalvageable terrorist organization. Because of that it's important to establish that in terms of terror IDF >= Hamas, and not at all Hamas > IDF.
Also I'm not saying no children died; that's just impossible. I'm saying that instances of a Hamas soldier intentionally shooting a child when they could've just not are very few, if any. I mean hell it says right in your link: 29. That's out of 1139 people, 2/3 of which are civilians, and after the IDF shot and bombed their own civilians to get Hamas fighters. This puts the number of children casualties among civilian casualties at about 5%. There are probably many reasons for this, but I think it's clear evidence that Hamas was at least avoiding children casualties as a conscious decision.