The truth is simple. Some Poles hated Jews and helped the Germans kill them.
if that were the case no Jews would survive in Poland, son - sometimes think on your own for a while - if the hate of Jews was so common and intense noone hiding Jews could stand a chance at not being discovered and denounced - yet the figures tell something very different
Jews were seen as unloyal to the Polish state, untrustworthy and difficult econimic competition by Poles before the war - some politicians theorized Poland without Jews and the ways to accomplish it but to my knowlegde no Polish politician ever imagined killing Jews as a means to such a goal
perhaps you read many books - yet it looks like most were pretty one sided or prejudiced
some personages who openly raised the Jewish issue in Poland before the war - see Zofia Kossak-Szczucka - were later during the war active in conspirational help for Jews (there was even a network of such conspirators which for example involved catholic monasteries)
don't you think it's pretty pointless to know your ancestry? I have only vague notion of my ancestry beyond the grandparents and I can still happily live without much knowledge of my great grandparents not to mention earlier
if I have Mongol, Armenian, Jewish, canibal, Hun, Gypsy, German, Russian, ***** blood in me it makes no difference to me - what can I do to change it even if I wanted to? look at people like some mixed race celebrities in Poland (there are a couple of such people in Poland) - their native tounge is Polish - are they not Polish? only a dumbfuck would say they aren't