Oh, that’s not only the U.S. but also China, although the German and other European’s view on China has turned negative already years ago. The most recent poll afaik is from 2023. The results in brief:

In Germany, one of the key European players traditionally setting the tone of Sino-European relations, the public opinion appears surprisingly hawkish: while 33 percent of respondents do see China as a necessary partner, 32 percent believe it is a rival. Coupled with 18 percent seeing China as an adversary, precisely one half of German respondents would presumably agree that a far-reaching remaking of the German China policy is needed. Data suggests that the same could also be true for Sweden, France, and Denmark …

The readiness to impose sanctions on China if it was to provide lethal aid to Russia seems remarkably high. Importantly, even though the question regarding sanctions highlighted that they could seriously harm Western economies, 41 percent of European respondents agreed that they should be imposed.

As the U.S. becomes more and more like China, it’s no wonder that views on German-U.S. relationship turn negative I would say.

[Edit to correct typo.]