They want to but they can't save everyone, that is the reality because we haven't prepared for this pandemic.
Some country did exceptionally well in the pandemic like China and Singapore
China is a communist country and Singapore a developed country...
Chinese citizens are very obedient to their government because of the very strict communist doctrine there, severe punishment will befall them if they fight the country while in many democratic countries there are still many who oppose the state even do not believe in the existence of the coronavirus, while Singapore has a majority of people who are smart and very caring with their health.