The soul concept was a mistake. It derives from the ignorant idea that the breath in a person is their soul.
This ancient error evolved into duality concepts which have even less basis, at least we could sense breath.
And modern science as it rapidly extends its understanding of the human brain has seen no evidence that a soul is either present or in any way necessary.
And you'd think that with 6 billion people currently alive and some more billions that have died that we might have found at least some tiny clue that a soul might exist, or even that it could exist. But there is zilch.
The concept of a soul is just a really dumb idea. There are no such things.