Although I don't deny that the Israeli military is generally quite reckless with civilian casualties (and this is probably purposeful to an extent), it's also true that Hamas doesn't exactly pick the most civilian-free areas to set up their base of operations either.
Like, if Hamas sets up shop in an orphanage with 100 kids inside, the IDF will bomb it to smithereens without second thought and kill all 100 just to get the 3 Hamas commanders inside, as long as none of those children were Israelis. That kind of scenario. The next day, Hamas blames Israel for killing 100 innocent children and Israel blames Hamas for endangering them in the first place.
So it's not fair to finger only one side when both parties to this conflict are so unapologetically shit and treat the rules of war like an achievements list.