Israel knew that Hamas would eventually do something, and Netanyahu allowed it to happen. Does it not seem weird that the strongest intelligence agency in the world, that is surveilling at region 24/7 and controls the borders of it, doesn't know an attack was being planned? There were plenty of warning signs and they were ignored. Add in the facts that Netanyahu was funding Hamas and helped block elections from happening and it makes it more obvious. He might not have known the scale of the attack, or that it would occur the same time a music festival was happening, but he knew something was coming. He had the built in excuse to do what he did. Also, after their response started, wasn't it strange that Netanyahu and his far right goons turned down ceasefire after ceasefire agreement, but then abruptly did a 180 once Trump promised them the land and they accepted the same deal that was offered nearly a year earlier? Also, add in the fact that they were purposefully demolishing Gaza block by block. There were empty areas and they would just level them. The signs were there the whole time, but some chose to ignore them.
And, I'm saying it now. This isn't over. Israel is only getting started. It's all part of their plan to take over the land and wipe out the Palestinians from there.