Not sure where you're getting your numbers or data, but that's just false. At least 60,0000 innocent civilians have been killed in Gaza, and Israel is to blame for this.
Hamas starting it is besides the point. We are capable of holding two different ideas in our heads: that what Hamas did to kick this off was reprehensible, and that what Israel has done since then has been horrifying.
I would personally argue that what Israel has done is far worse than what Hamas did, but it doesn't matter if you agree or disagree with that. Israel has gone far far far beyond your notion of "fighting back".
> should work to destroy Hamas who are responsible for turning Gaza into such a hellhole.
Israel seems to be doing a good job of that on their own. And had been even prior to the current conflict.