I would say that Germany has no better friend than the U.S. but I would not say that the U.S. has no better friend than Germany. Germany and France have teamed up to be the new bullies of Europe and the present tyrannical state of the EU is the result.
Germany and France have been the bullies of Europe for several centuries. They are the two largest economies and populations on the continent.
The UK was able to out do both of them due to THE navy in the world and THE empire in the world. Then WW1 and WW2 happened. The UK was the only country that paid her US WW2 debt in full. The Empire is gone, as is much of the navy. One of the countries she spawned, the US, is THE superpower remaining. Of course, XiJinBiden and Heels-up Ho are doing all they can to destroy the US.