I personally don't hold to a literal six day creation. The Hebrew word for day doesn't have to mean a literal 24 hour day. I haven't made my mind up on the specifics yet, but I tend to think it's a balance of natural selection and progressive creations. God introduced organisms at key moments, but over a long time period. I think natural selection, whatever you think in terms of evolution, certainly accounts for fluctuating populations of species since we've been able to measure it. As I said, though, still playing with a few different ideas.
But really, the early chapters of Genesis aren't about providing a comprehensive textbook on creation. They are about showing the supremacy of God, the greatness of his creative majesty, and his plan to make mankind in his image, before we turned away from him. They also refute address creation accounts from other earlier civilisations, so they're partially apologetic in structure and nature. They're almost beautifully poetic in their construction, so appreciate their description of God.
Thinking about creation is really important, but for me, the real battleground for faith is not in creation, but in Christ. Scientists and theologians both cannot make up their minds about what happened at creation, so long ago. We will probably never have a full understanding of exactly how the world and everything came into being, down to fine details. Only God knows. However, the claims of Christ are much easier to analyse, given they're only 2000 years old. Did Christ say what the Bible records him saying? Did he do those things? Did he die and rise again? If yes, then everything else becomes secondary. Jesus claimed he was God. He reportedly died and rose again. If he was right, he can answer all your questions. Planksh, I recommended you start there. What do you make of Jesus?
