I don’t think you are aware of just how small this war is in terms of death toll compared to other wars that are currently going on. There is however a disproportionate number of articles (and thus also journalists) covering it:
This doesn’t meant that one should discard the suffering of the civilians caught in the crossfire. It’s horrible and I weep for every innocent who has to suffer because of the decision a small number of terrorists made - but it’s one thing to acknowledge that they died in this conflict and demand both parties to protect civilians and another entirely to claim that Israel is responsible for a record number of war crimes. Not every dead civilian is a war crime. Neither is not supplying your enemy with resources nor is bombing civilian infrastructure that is being used for military purposes. These safe zones were also established to protect civilians from the bulk of the ground fighting. At no point did Israel make the unrealistic promise that they would be safe from bombs. Given that Hamas operates from there and uses these places to stage massed unguided rocket attacks against civilians in Israel, this would be entirely unrealistic. Nobody in their right mind would deny Israel the right to strike these targets. You would do the same if you were in their place.