Searching for "change my vote" brings this result. However, I don't believe that this was really a bigger trend in the US, as it only shows the relative change.
Maybe a few tousand queries per day could create that peak.
0-100 is actually a percentage. These are not absolute numbers, no absolute number is ever being displayed. The only way to approach absolute numbers is by comparing with other queries:
Kamala and Donald are way more popular than "change my vote":
But "AfD" and "change my vote" are similarly popular
If we consider that most Americans are not interested in German politics, I guess that may tell you something about the trend. Then again, "afd" is a three-letter acronym (TLA) and may mean a lot of things, so the "afd" graph may be inflated.
At the same time. If you compare the search term with 2020 tends there is no notable difference. As sad as the results were, there is no notable amount of regret or stupidity on "the other side". people make a big thing or of nothing.
The article on faz.net refers to this Newsweek article. Both articles have pretty much the same content (incl. the example with returning a red sweater to get a blue one).
Here's the actual data. I voted against that orange felonious rapist, but I don't appreciate being lied to. The data show that this is statistically insignificant.
One day trend: