I have always been a great believer in getting on with my life and being angry is not an effective way of accomplishing this. That is exactly what the Israelis did when they grabbed Eichmann and brought him to trial. As far as what the Jews of Hungary could have done for themselves, when you consider that much of the Jewish population consisted of families with the usual mix of elderly parents, grandparents, little children, etc., who were born and rooted in their communities leading peaceful lives, their means of resisting or escaping from the onslaught of well-armed vicious thugs were quite limited. Also there was no place to which they could practically escape or that would accept them. Finally, like most people, they did not want to face up to the stark reality of what was waiting for them.
Different survivors have different ways of coping with their pasts.
My way has been to pretend that it all happened to someone other than me. The change in my religious attitude came shortly after the war. During this time I was in an orphanage in Italy, which was run by Palestinian Jews who served in the British Army, and who after the war made it their mission to gather the survivors of the Holocaust and bring them to the country that later became the State of Israel. These individuals were idealistic, dedicated and highly motivated, but their Jewishness was secular and socialistic rather than religious. Rightly or wrongly, they felt, and I was persuaded, that the deeply religious Orthodox life was associated with persecution and victimhood, whereas the Jew that was needed to build a new country required a secular, vigorous, and assertive people, who were the very opposite of the stereotyped timid and bookish Jews of the old Eastern European ghettoes.