It is now widely accepted fact that Bibi supported Hamas because he wanted to "divide and conquer" the Palestinians. By propping up Hamas, Netanyahu and the Israeli government had a reason not to accept the two-state solution that was accepted and promoted by the PA and Fatah.

Hell, even the Times of Israel knows this: https://www.timesofisrael.com/for-years-netanyahu-propped-up-hamas-now-its-blown-up-in-our-faces/