God is the only rational explanation for why anything exists at all. Science has tried to come up with explanations that exclude a Creator, but they are nothing but guesses. Many, if not all of them, defy science and logic. For instance, some scientists claim that energy has always existed. This is impossible since nothing physical can be eternal. It violates the law of cause and effect. That leaves us with the question of where energy came from. The problem is that it is impossible for something physical to create itself. The only reasonable answer is that someone created it. And don't even bother insulting our intelligence by asking who created God. For one, God is not physical. The laws of physics do not apply to Him. He created them. Bottom line. The universe requires a Creator. Nothing else makes any sense.
Actually, the law of the conservation of energy says energy is, for all intents and purposes, eternal. It just takes different forms.
Your knowledge of science appears to be seriously lacking, and so you will lose any argument on that front.
I've spent my life in the technical sciences, most of it as an atheist/agnostic. Today, I am a firm believer in God, but I do not dismiss science. Far from it! I see science and religion complementing each other.
Where we get into trouble is when science tries to force itself into the religious realm, and vice versa.
You cannot, and should not, try to force your religious beliefs into the sciences which inform us of many wondrous things in God's universe.