"wouldn't it have been better to only go to war with specific Nazi leaders, instead of the entirety of Nazi Germany, that is full of civilians who didn't cause this?"

Israel is a democratic country. The Israelis willingly elect war criminals to lead their country.

Wouldn’t it have been better to fatwa specific Israeli leaders instead of the entire country that is full of civilians who didn’t cause this?

I hate this excuse liberals keep making, either to whitewash the actions of nations that have lost their minds, or to do cringe "I hate the government not the people" sthicks.

The government doesn't fall from the heavens. The Israeli leaders, just like the Americans or Nazis did not come out of nowhere and cause mass hypnosis amongst the innocent populations whose only crime was to be too weak to resist hypnosis. These leaders emerged from the population. They were supported by the population before they acquired legislative/executive power (that's how you aquire the power in the first place). Their commands mean nothing if the population doesn't go along with it. These leaders are leaders of nations only so long as they represent the wills of their nations, and the will of their nations is to kill, to loot and to worship their capitalist masters.

No man, and I mean none at all rules alone. One comes to realise this truth when one converses directly with the supposed innocents in America, or Germany or Israel. These people by and large know that their governments are involved in genocide (at this point, who isn't aware?), and if they aren't actively cheering it on, at the minimum they are going along with it.

Israel is the cause of this. Their target is completely correct.

97% of Israelis support ethnically cleansing Gaza.