How does Darwinian evolution help explain why religions arose in the first place?

How does Darwinian evolution help explain why religions arose in
the first place?

Evolution can easily explain the reason why religions exist all across the world today. Evolution is the theory of survival of the fittest, where a favorable trait will succeed in life over a trait that is unfavorable. therefore, given 100 human beings, where 20 of them were superstitious, believing that an evil demon lived in the bushes, would out survive the 80 who were not superstitious. this is caused by the theory that those who are SS(superstitious) would run whenever they heard a russeling in the bushes, where as those who are not SS would stay, and 99% of the time those who are not SS would be right, but that 1% of the time, they die, making those who are not SS an unfavorable trait.

We have all evolved from the best of the best, so SS because SS is a favorable trait we all have inherited that trait, and so we have become religious.