The Big Bang Theory explains that

The Big Bang theory proposes that the universe started as a singularity, a point of infinite density and temperature, and then expanded rapidly in a process called cosmic inflation. This rapid expansion caused the universe to cool down, allowing matter and radiation to form. Over time, the matter and radiation combined to form the first atoms, which eventually aggregated to form galaxies and other structures.

‘Big bang’ resulted in the origin of universe, not life.