TheOGDuanChen
The only way to create something unique is with a lot of research, usually something unique is in the sciatic surveys, or in a more gender of social study and that is associated with the study of a certain culture.
You will hardly find this in a webnovel, not to mention that original just if it is the idea of a "new" world, but everything has to be based on something, even if it is in a bible of a random tribe or flolcloric legends of your country.
So we're always using something as a basis, webnovel is just another way to do it.
Imagine a novel by the Tupinikin Indians (Indigenous tribe in the BR), they travel to the future... I do not know why, but it arrives in the future and there begins its saga to return to the past or adapt to the future.
Someone outside Brazil, who is not an anthropologist or scholar or who has any connection with BR, will know what a fucking tupiniquim is (not denigrating my beautiful Indians, because think of a beautiful people!).
Oops, I got away from it.
And even that example, I only changed who would travel to the future, because the plot must already exist somewhere!
Unless someone discovered a new theory of space and someone later makes a webnovel, there is no way to be original.
Now if you're talking about being cliche, always writing the same thing, kind of killing a villain random cannon bush and the MC being OP that kind of thing .... which is actually laziness of the author (after 200 or more chapters, I even understand the author), has little to do with originality. Being original does not get into the problem you're facing, but it's more sloppy, lazy, the cliche that sort of thing.
Now anyone who wants a romance with Tupini characters calls me! #Just kidding