You're comparing a web search to a news search. If you do the same search on google.com (not news!), you get good results. Including a picture of the US ambassador to Germany.

https://www.google.com/?q=US+Ambassador+Germany

And when you search DDG in their news section, most of the results are about the impeachment hearing, just like Google.

https://duckduckgo.com/?q=US+ambassador+Germany&t=hk&iar=new...