The EU has some issues, the economy isn’t the most dynamic, but the quality of life is great and has been improving. It is a large global market and has cultural influence. Our democratic institutions have survived ok so far. I think we are doing quite ok. We will see if we can deal well with issues caused by our aging population, that’s pretty challenging but I think we are in a reasonable position (and actually a more than great position if we compare worldwide)
To put it politely, America is just not, at this moment in time, with a predictable actor with rational self interest.
If things continue to fail, then its simple to assume we return to the spheres of interest stage of things, at which point the EU still functions as a bloc which everyone trades with.
Plus, American GDP figures are matched with a K shaped economy, and a population with a deep sense of unease and unhappiness.
The US has very little influence today compared to a decade or more ago. To the extent that the world at large cares about the US it's because they are committing genocide and destroying global trade logistics. All of their former allies are trying to substitute them out, or at least hedge with other international relations.
As far as I can tell, outside certain parts of the Occident, no one cares about new US movies or television series anymore. The Oscars gather some interest because some people want to know if any entertainment industry people will go against the regime and say something negative about mass murder of children, but that's about it. Future generations will be shaped more by chinese and indian movies than usian ones.
When apartheid South Africa was about to crumble it also initiated nasty military campaigns and faked political and military supremacy for a while, as did Idi Amin's Uganda. I'd bet something similar is going on in the US.
Some people are still stuck in the late Cold War, notably EU politicians like von der Leyen and Kaja Kallas, as well as most swedish top politicians. They cannot imagine a world where the US is not calling the shots and will drag Europe further into global irrelevancy by idiotically paying tribute and kneeling for the US. Pretty much the rest of the world is disgusted and horrified by the bumbling nastiness of contemporary US empire.