Simple
You, yourself insist that the universe is eternal, and self existing . Scientist for the most part agree that it has always existed in one form or another. Energy, matter, both. So In its current form, some planets have the right natural conditions for life to develop from non living things. ( abiogenesis) once this happens, evolution kicks in. Self replicating life forms begin to branch out, adapting to the environment.
Becoming more complex . Which eventually leads you to us.
No god needed for any of this, just physics, chemistry, the right combination of conditions. Pretty much a hit or miss deal. But in a vast universe, you’re bound to score a jackpot every now and then.
P.S. I have absolutely no intention of trying to prove something that isn’t there, is in fact, not there.
You’re so certain god exist, you point him out. Show us your evidence, hypothetical opinions do not count as proof. And that is all you have.
