The bible-God is not mysterious only insidious and ignorant

How ironical and ridiculous is the Idea, that a perfect and all knowing God premeditated and made people--then realized he made a mistake. Ha ha! (1) Genesis 1:26-31,  God said making man was very good. (2) But in Genesis 3:16, 22-24 he curse them. (3) By Genesis 6:5-7 God was ready to destroy mankind completely.  (4) In Genesis 7:16-24 God liquidates mankind except for eight righteous ones. From the holy eight people earth was repopulated with sin and gross wickedness. What was the purpose of saving the righteousness? God of the bible is a fraudulent and fictional character.