Israel killing civilians in Gaza and the West Bank Israel is a first-world country in a third-world area.
Ideally, the situation would be for Israel to have advanced weapons and use them to hold off attacks from their technologically backward neighbors. That's what the Iron Dome is meant to do. "Launch all the rockets you want, and we'll just sit here and shoot them down." Hamas says, "Alright, then. Rockets don't work? We'll just charge in and slaughter as many of you as we can."
What is Israel supposed to do?
Yes, people will die. Children will be orphaned. Children will die. Many people will be maimed, crippled, impoverished, and immiserated. Homes and shops will burn. It's going to be horrible, and I think the Israelis know this. But still: what are they supposed to do? Just sit there and take it? Thus encouraging a second strike? No. They have to hit back, and it has to hurt.
What makes this difficult is the fact that Israel is overwhelmingly more powerful than Hamas. This makes the situation difficult for anyone with a conscience. It makes the situation especially difficult for Western leftists, who see everything through a prism of oppressed/oppressor logic. If the first question you ask is always, "Which person is the cop and which person is George Floyd?" then your moral prism will be skewed.