Hamas is not a state or government. It is a militia to fight occupation. It is nowhere near as organized as Israel with its governing body. You cannot equate the two.
Israel does not oppose this. There are mountains of evidence of Israelis torturing and raping children, pregnant women and elderly Palestinians. There is mountains of evidence of Palestinians being burned alive, or forced to destroy their own homes with their bare hands. The magnitude of cruelty is unmatched.
Do you want more evidence? I am happy to provide. But it seems you reject it even when presented evidence.