Yes most of human behavior is about fear - just that we mostly aren’t aware of it. Almost everything is a coping strategy for fear - some constructive, others destructive. Some people end up with more of the constructive ones, others with more of the destructive ones. The way to have some control over this is mindfulness, to practice being aware of the fear whenever it comes, and then of the habitual response. And then to practice responding differently if one doesn’t find one’s habitual response constructive.