How can one respond to claims that the universe came into being by chance?

The assertion that coincidence is the cause of the universe's existence is far from rational and categorizes its proponent as insane or senile. Mathematically, the existence of the current universe by coincidence is impossible, just as scientists have confirmed the impossibility of atoms randomly assembling to form a single molecule. Therefore, there must be an innovative, all-knowing, and expert Creator for this universe.