The theory of evolution does not address the origin of life or the ultimate starting point of all things. Instead, it explains how life has diversified and changed over billions of years once it originated.
The scientific theory of evolution, supported by a vast body of evidence from various fields such as paleontology, genetics, and comparative anatomy, explains how species change over time through the processes of genetic variation, natural selection, and reproductive success. It describes how populations of organisms adapt and evolve in response to their changing environments.
The origin of life itself is a separate question that falls under the field of abiogenesis or the study of how life may have arisen from non-living matter. While there are several hypotheses and ongoing research in this area, the exact processes by which life originated on Earth are not yet fully understood.
It's important to note that evolution does not seek to explain the origin of the universe or the fundamental nature of existence. These questions fall under the purview of cosmology and philosophy. The theory of evolution focuses on the mechanisms that explain the diversity and changes in life forms that have emerged on Earth over vast periods of time.