The current war was initiated via a sneak attack by Hamas militants from Gaza who committed rather unspeakable atrocities against Israeli civilians. Not justifying their actions but as an uninvolved third party I’m going to at least acknowledge the history of the situation before judging their actions.
Have you looked at the history before that? It seems you're missing 77 years of frequent massacres by Israel, a brutal occupation/apartheid of the West Bank, and a 17-year blockade of Gaza.