Destroyed buildings in a war has nothing to do with whether a crime was committed or not. According to international humanitarian law Israel has the right to keep fighting until the threat is fully gone - by elimination or surrender. Just like with Ukraine vs Russia.

That same international law says that it's a war crime to target civilians or destroy civilian infrastructure like hospitals or to refuse aid and supplies such as food and water. All of which have been well-documented as having occurred.

Yes, it is a war crime to deliberately attack civilians. It is not a war crime to target combatants leading to destroyed buildings and collateral deaths. Hospitals can be attacked if used militarily, which Hxmas does all the time, as long as you give warnings - which Israel does again and again.

Agreed. And food? Surely you don't think starving the civilian population is acceptable given those same humanitarian rules you were citing?