Israel is to blame for the Apartheid, yes. Israel has also never stopped torturing or murdering Palestinians themselves, not that you care.
Hamas is obviously responsible for their own crimes against humanity, which have been reported by human rights organizations.
This is an analysis of the corruption within Hamas and Fatah. The existence of both are directly due to the violent Settler Colonialism and Apartheid. On top of that, Israel has funded both as a divide and conquer strategy.
If you don’t like either, which is reasonable as neither do the majority of Palestinians, you need to support an end to the Apartheid in order for Palestinians to have a free and fair election. This isn’t a difficult concept.