you miss the point.
Evolution of life on Earth is independent from whatever mechanism caused the universe to be.
If the BBT is correct, fine - it produced a material universe which some 11billion years later became conducive to life developing here and elsewhere.
If the BBT is incorrect, then some other mechanism caused a universe to come into being which became, about 3 billion years ago, conducive to life developing here and elsewhere.
Evolution IS dependent upon the conditions, yes, but not on how those conditions came to be - that is what is meant by "Big Bang = nothing to do witrh evolution"
has no one ever explained this to you before?