The Zionists have used the WW2 Holocaust to OWN victimhood. No one has or can suffer as much as Jews. This is not a stance that many Jews take, let me be clear. It is a Zionist ploy to give Zionists the 'right' to 'defend' themselves by any means they like. It is a deception that is hurting non-Zionist Jews as well as anyone they see as an obstacle to their aims.
I am sorry to hear about your family. The Nazis were twisted and barbaric when it came to groups they thought did not fit into their racial ideology including people with disabilities, gay people, Jehova's Witnesses, Roma, and then different nationalities including Slavs, as you say. The majority of Jews they exterminated were in fact, not German Jews, but Jews from Eastern Europe.