Is it acceptable to have these theories/beliefs?

⁠Since evolution is a theory that has tons of evidence, is it reasonable to believe the Day-Age theory?

⁠Is it reasonable to believe that evolution that created humans occurred right after Adam was created from the dust of the Earth? I have this theory because Cain fears other humans after his exile, and since Adam, Eve, Cain, and Abel were the only people mentioned in the Bible and yet the Bible mentions Cain fearing others. And since Noah and his family were the only ones to survive the great flood and are direct descendants of Adam, we can say that Original Sin is from them also.

⁠God allowed inbreeding for all animals to have no consequences after the Great Flood. Since excessive inbreeding brings MAJOR health issues and would basically bring a biological disaster, I believe that God let all humans and animals inbreed for a couple hundred years so that the Earth would be populated again.