As an American myself, it’s very clear that the US is on the decline and has been for quite a while. The decline really seemed to gain speed when Donald Trump won the Presidency, ushering in anti-intellectualism in the government as well as in large parts of the population.
In addition, many Americans don’t have access to or can’t afford education beyond highschool, education that’s freely available to most people in other developed countries at the beginning and throughout their career.
At the elementary level, American students also do worse than kids in many other countries, especially in Europe and Asia, as proven by the most recent PISA evaluation in 2023.