Prophets from Enoch (quoted in Jewish/Protestant canon both New and Old Testament) to Jesus Himself to John (Revelation) all proclaim an end to the world. Enoch prophesied the end of the pre-flood world by water. Even the time frame was prophesied - he was directed to name his son "Methuselah" (when he dies, it will come). From the record, the flood came the very year Methuselah died, and there are hints it was the same week.

There are numerous remains of the pre-flood world. Establishment explanations are total B.S. I won't go into it here. I recommend a young guy "Bright Insight" who has made it his mission to use crowd sourced funds to travel around the world and take high quality video of his tours of ancient sites. He often finagles access to areas off limits to tourists. Look for him on Rumble and probably still Youtube.

Prophets from Enoch to Peter to John proclaim a fiery end to the present Earth (as opposed to a watery end to the previous Earth). I actually think it will be an end to the entire present universe - but I could be convinced otherwise.

This is all part of the remedy for sin. How do you redeem creations with corrupted body, soul, spirit, while preserving their free will and personhood? "The heavens are the work of Your fingers" but "salvation is the work of Your strong right arm." Our bodies die, and are resurrected (everyone, the righteous and the wicked). We die to our self and are recreated as a new life in Christ. The world meets a fiery end, and is recreated as "the new heavens and the new earth". (New heavens is why I think the entire universe is slated for demolish and rebuild.) Jesus says, "I go to prepare a place for you." The new world is being made (completely different time line/fabric, so "is made" is probably accurate as well) ready for us.