Novel and ff ideas for authors

A person who have lost interest and emotions in everything suddenly finds himself in another world and its not just a normal world as this world was actually a higher plane of existence that houses magicians, cultivators, martial artist, and monsters. A world larger than a universe althought it doesn't grow larger it was one of the strongest as this world regresses instead because this world was once a mechanical giant that was transformed by the inhabitants of this world a world that has higher civilization capable of controlling and manipulating any types of energies and even to the point of concepts but it all came to an end when one day the world was invaded by beings from the outside and so this world was now your western and eastern type fantasy world containing technologies from ancient times that holds massive power that can defeat any being who lived in this world and this person was transported to that world.