Atheism is every bit an act of “faith” as believing in a Supreme being.
You cannot prove a negative.
My “act of faith” comes with evidence that the mathematical precision eminent in existence, and the recently discovered layering of a separate sequencing “language” previously hidden within the structure of DNA are of a piece.
You may call these “accidents”. Not me.
Combined with how the universe seems designed for discovery, I’ll stack my sense of it with atheism and the “odds game” anytime. We can even take it into M-Theory, multiple universes and ‘branes’ if need be. There’s a lot more going on in the ‘world’ than we know.
But if atheism fits your perceptions, you’re certainly free to go ahead with your own made-up theories about how things work.
But just remember, YOU are making it up.