The Israeli government is telling you one thing but reality says another. For example, yes Ibrahim Biari the organiser of the attack on Israel is dead but Israel claim that they killed him. I doubt it. Even the UN and UNICEF can't confirm it. Yes Hamas are denying the death from Israel but I can't trust Hamas either. This blog says that Ibrahim Biari was "allegedly killed" killed by the Israeli Defense Force, as well as Muhammad A’sar, the commander of Hamas’ anti-tank missile unit. But there is no proof that they were both killed by Israel, they could have committed suicide or something, but no proof.
https://medium.com/bouncin-and-behavin-blogs/stop-calling-them-human-shields-d149f42ce4b9