Evaluate the rationale under guiding the creation story in the old testament?

I don't think you know what the words mean. I don't think you even know what the "creation story" really is. Almost nobody does.

Genesis 1:1 In the beginning God created the heaven and the earth.

You probably thought creation went on for six days. The bible does not say any such thing. It says "in the beginning." Then verse 2 says "And the earth was without form, and void", but Isaiah 45:18 says "he created it not in vain". "Void" and "vain" are translated from the same Hebrew word, "tohu". He did not create it that way, it became that way.

What most people think of as "the creation story" was in fact a rebuilding after a war in heaven, which is described here and there in other books.

I'm pretty smart and I don't understand "rationale under guiding". I am pretty sure you don't either.

It is not reliable to let people tell you what the bible says. Many people will make up stuff because they don't know what it says, and many will make up stuff because they wish it would not say what it says. You just have to read it for yourself. Read a chapter of Proverbs every day. Proverbs has 31 chapters so you can keep your place by just looking at a calendar. There is no religion or nothing in Proverbs and you don't have to believe anything. Just read to find wisdom. When you are comfortable with that, then read the bible from Romans to 2 Thessalonians over and over until you start to remember what it says. That is the part that applies to Christians.

Feel free to send me a private message if you need more help on this.