It's not the case in Germany, to get into a management role you generally need to be German. Also, the housing market is completely broken with all the good stock in the hands of white German boomers on old rental contracts paying a 1/3 what immigrants pay.

Germany is not a land of opportunity, it is a land of relative comfort, with laws and regulations in place to protect the lives of German boomers. Immigrants will never go far in Germany, but they will be relatively comfortable.