No worries mate, don’t be so harsh on yourself. Europe is multilingual and English is the standard language. But the reason we speak multiple languages is because we learn them in school, not because we are so open-minded. If you like to pick up a language I would recommend Spanish, it will be the most useful for you on the American continent. German and Polish are hard to learn and not worth it if you don’t plan on moving here.
US Americans being aware of other languages and cultures existing is basically all we want, so just keep visiting our meme community from time to time and enjoy the German humour ;)
da kann man nichts machen