The combatant to civilian death rate in Gaza is somewhere between 1:1.1 and 1:1.5 which is very very low in war zones with high civilian populations like Gaza. I think the Israeli govt. Is doing what they can to avoid civilian casualties but it's very difficult. And there will be some members of the IDF, like any army who are bad and don't behave as they should but I can tell you the people I know in the IDF are fathers with children of their own who hate that there are any civilian deaths but they are fighting to defend their country, to keep their own families safe.*
Just focusing on kids, the UN reports on Children and Armed Conflict over the last 18 years show that no other conflicts killed a higher number of children in one year. This does not include those among nearly 20,000 people who are missing. tens of thousands of living children are missing limbs or have been orphaned or otherwise traumatized.
Nobody knows the combatant to civilian rate. You are just repeating propaganda. Even Israeli steadfast supporters like the US agree that the civilian death rate is too high. I'm sure there are many upstanding members of the IDF, they are "just following orders" after all.
All humans want to live in safety with their loved ones, but peace won't be found in bombs, destruction and despair.