But to make Israel entirely responsible for the existence for the Hamas
Well, they largely are though, because they created the conditions that allows Hamas to flourish. Israel is the country that has been waging war against the Palestinians. Israel has continually fought against making real progress on a two-state solution, and Israel is the one using it’s army to let Israeli colonizers take over more and more Palestinian land in the West Bank. Israel is thr country that is illegally occupying the West Bank. Israel is an apartheid country.
Hardliners–like Netanyahu–oppose any peace process with the Palestinians, and oppose allowing them to have the land back that is rightfully and legally theirs. Hardline Israelis are every bit as deranged as evangelical Christians, and for largely the same reasons.
This isn’t about anti-semitism, unless you want to insist that Israel is a Jewish ethno-state, and that any opposition to Israeli policy, politics, and military action is actually antisemitism.