But it is a simple fact that the Israeli citizens, who are mostly Jews

Self-selected sample. Some Jews are Israelis, some Israelis support Likud or even worse parties.

I’ve met quite a number of Israelis who are decent people. Conversely, I’ve met a few Palestinians who advocate brutal, evil actions against Jews. Israelis have disproportionate power in the conflict, and therefore bear more responsibility as the occupiers, but the notion of collective guilt is a sinister one that should be avoided.