Just watched Rick and Morty and in the pilot there's something like that - "if we would have done what you wanted, I would have never have found them". It sounds incorrect to me, shouldn't it be something like "I would have never found them" instead?
if we would have done what you wanted
Could be more simply stated as
If we did what you wanted
You are correct about
I would have never
but since the plural is used in the first part, it might be better to continue with
we would have never found them.