The US hardly lacks collectivism, it is merely on an incomprehensibly grand scale. Pay your taxes and the state will help you, evade them and the state will punish you.
Certain African countries are strongly individualistic. The state is too weak to help or punish anybody. Infrastructure crumbles, crime and slavery abounds.
You seriously don't want to visit let alone live in a country that lacks collectivism.
Collectivism != cooperation. The comment to which you replied also says the US has heavily collectivism. But due to its coercive nature, it killed the cooperation that existed before it.