USA certainly transformed much of the world on so many levels in the 20th century with its numerous meaningful inventions and exports to other countries - credit where due.
However, you are being overconfident and narrow in your focus - you are overlooking a pressing issue of erosion of American social system and social values by extension (posts 7 and 10 expand on this theme). American internal political polarization has reached a whole new level (apparent in American Press/Media since 2001; POTUS Donald Trump's attitude is not helping either) - your country does not have a coherent national narrative in relation to many developments since 2001 (not even in relation to 9/11 event - was this an inside job or not? Like seriously?). This problem coupled with significant decline in American sense of MORALITY as well as a dismal response to the COVID-19 outbreak... These issues have shown much of the world that your society is no longer a ROLE MODEL for others to emulate in the social dimension.
SOFT POWER is contingent upon coherence in national narrative and MORALITY, mind you.
Does it surprise you that China is drawing more approval and support from much of the world lately? This is apparent even in UN where several resolutions against China failed to pass due massive disapproval.
China have a coherent national narrative which is difficult to breach/counter/critic, and Chinese centralization enable effective response to emergency situations which is also apparent in its response to the COVID-19 outbreak.
If you fail to understand and learn from your negative indicators as well as constructive criticism coming your way, much of the world will loose faith in American leadership at some point, and more and more people will come to declare USA a failed state on many counts. And when this happen, people look for alternatives. Do not expect distant observers to cover your mess for indefinite period.