The Geneva convention still requires that all possible measures are taken to limit civillian casualties and that the harm of civillians need to be in relation to the military goal achieved.

There is many reasons to question that Israel is taking these steps. It starts with the medical system of Gaza already being past its limits, so any hit on a hospital is especially severe, as it renders the medical system even more unable to provide basic health care to people. It continues with deliberate cuts to telecommunication, so warnings are not reaching the civillians at targeted hospitals, regular attacks of designated evacuation corridors by the IDF, including targeting ambulances and the simple fact that you cannot evacuate an overburdendend ICU in 15 minutes if you have no place to take the patients or ambulances to get them there.

It goes on with there being no independant evaluation if Israels claims of military targets are actually factful, while there is plenty of reports where it seemed that only civillians have been it. Furthermore the language used by the IDF and Israeli government speaks opposite of protecting civillian lifes. From fighting against "human animals" to discussing nuclear attacks on Gaza by a government minister, who is still in his position afterwards.

Finally and most evidently the total blockade of Gaza in the first weeks and the continued limits to basic goods such as drinking water, food and medical supplies, with a continued blockade of fuel and targeting of electrical and water infrastructure is a huge fucking war crime. There is no basis in the Geneva convention that could justify depriving more than two million people of the immediate necessities for survival. It is a war crime through and through. Even after four weeks of international pressure the amount of food and water that gets to Gaza is still far too little to keep the population from starving.

The Geneva Convention's definition of genocide. "... any of the following acts committed with intent to destroy, in whole or in part, a national, ethnic, racial, or religious group, such as: (a) Killing members of the group; (b) Causing serious bodily or mental harm to members of the group; (c) Deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part; (d) Imposing measures intended to prevent births within the group; (e) Forcibly transferring children of the group to another group."

You seem to defend a and b as necessary costs of doing business. Isreal's frequent attacks on civilians, journalists, medical personnel, and humanitarian groups seem to conflict this. Look into the killings of clearly marked journalists.

I'd argue that c is met by Isreal's control of Gaza's water and power along with the targeting of hospitals.

The Geneva Convention on collective penalties. "No protected person may be punished for any offense he or she gas not personally committed. Collective penalties and likewise all measures of intimidation or of terrorism are prohibited."