You've been lied to about everything. Stop blindly accepting the history you were taught. It was either an outright lie or, at best, carefully curated half truths to distort reality, to push a false narrative and conclusion (i.e. propaganda and brainwashing).

You should read these:

https://www.wintersonnenwende.com/scriptorium/english/archives/articles/wrsynopsis.html

https://www.ibiblio.org/hyperwar/NHC/NewPDFs/GERMANY/GER.Polish.Atrocities.Against.German.Minority.in.Poland.1940.pdf

You've been lied to about everything. Stop blindly accepting the history you were taught. It was either an outright lie or carefully curated half truths.

You should read these:

https://www.wintersonnenwende.com/scriptorium/english/archives/articles/wrsynopsis.html

https://www.ibiblio.org/hyperwar/NHC/NewPDFs/GERMANY/GER.Polish.Atrocities.Against.German.Minority.in.Poland.1940.pdf