Fisherman,
Evolution is not a "theory" in the vernacular.
You also don't "prove" things in science, You "validate."
There is also no "burden of proof" in the scientific method. That is chiefly a legal term.
The theory of evolution is that organisms change over time as a result of changes in heritable characteristics or even behavioral traits. It's that simple.
You, yourself, evolved. You went from being a sperm and an ovum to a fetus, from a fetus to an infant. That infant didn't just get large and grow into a giant baby. You went from a baby to a child to an adolescent to an adult. This pattern is called "evolution."
This pattern of evolution is not merely experienced individually. All living organisms seem to come from a common source. The pattern life leaves behind that has been discerned is an evolving pattern, connecting what are now varied species together.
Thus ends the basic model. It doesn't explain how the process started, claim that it required direction or that direction wasn't needed, support atheism or theism. Life has left a pattern behind, and the data shows what is explained in the model.
But I will tell you what. I am sure you deserve to explain this pattern that biology claims supports evolution. Explain to us your scientific theory, have it independently validated by disinterested parties like all scientific theories are and explain it to us. Since models neither validate religion or atheism, no one here on this board will complain if you explain things according to the scientific method. If the evolution model is wrong, then what is the correct way to explain what life's historical pattern demonstrates?