I'm not familiar with the nature of crime in either Germany or Poland. Do either country have widespread gun ownership like the United States does?
In the United States when you look at the data that is posted in my previous comment you will see that the vast majority of police shootings involve an armed suspect.
However even if you only look at data on unarmed suspects I highly suspect that the US has a higher per capita rate than either Germany or Poland.
So it’s around 20-100x more per capita than it could be.