The narrative I grew up with, as an American Polish Jew, was one of isolation and betrayal by non-Jewish Poles. Leon Uris's Mila 18, which I read at a formative age, also paints a picture of Poland's Jews being abandoned to their fate even by those who actively opposed the Nazis. Is this a more or less accurate picture of what actually happened in this period?
Like everything about the Second Republic, it is complicated. While you wait for a fresh answer, you might like [this old answer] (https://www.reddit.com/r/AskHistorians/comments/ce9zsl/to_what_scale_was_complicit_poland_with_killing/) by /u/kugelfang52. I also have some comments in there, probably a bit more sympathetic to the Armia Krajowa, the official Polish Government in Exile resistance army. Both the Government in Exile and the AK represented a wide range of Polish political factions, some of which were ideologically anti-Semitic. The AK armed and trained one of the two Jewish organizations that fought in the ghetto, ŻOB, but did not fight in support of the uprising.
In the AK we are discussing an organization that on the one hand ran Żegota, the only resistance organization in Europe dedicated to saving Jews, and on the other, had many otriads that executed all Jews they found in the forrest, as a matter of policy.