I think few would argue we have among the best doctors in the world and possibly the best pharmaceuticals.
Still, on a worldwide country by country average life span, the USA ranks #43.
Countries such as Taiwan, Greece, Ireland, Austria, Spain, France, Norway, Hong Kong, and South Korea all have a longer average life span then we do.
https://www.cia.gov/library/publications/the-world-factbook/rankorder/2102rank.html
The drug overdose situation is causing the U.S. average lifespan to decrease.
Those averages include all the gang and inner city murders. Skews US down.
Of course other countries have a longer life span
The US has a large invader community with poor health and poorer life habits.
Also different countries count deaths differently.
I read once that if the stats for the black and brown population were eliminated, the US would statistically look like Scandinavian countries or the Netherlands. Especially in relationship to violence.
We aren’t a homogeneous population. Some subsets of our population are really pulling the average down.