Apocalypse king

This is the story of our protagonist Ravi to become a king in the apocalypse . he will change the events of the apocalypse to ensure the survival of his loved ones and himself . he will become the strongest person in the world . this is my first time writing any story so there can be mistakes ,please do point out this novel is inspired by novel Doom lord if you have time please read that. I am student so I can't update book regularly