The more you go into original territory, the more niche your novel becomes.
My novel is very original, and very niche, as an example.
All genre tropes are subverted, not even the story tags tell what the story is about, reading it you will realize the tags are ambiguous.
As one reviewer on royalroad once said:
"Its fantasy but not, its isekai but not, its game of thrones but not, its scifi but not, I don't know what this is."
Its isekai but not = the MC is born there, a native, but they have memories of another person, they are theoretically the same person but with a different soul, what makes you, you? This is further diluted when the mc is told that there exist multiple doppelgangers in the same situation.
Its fantasy but not = low fantasy mixed with scifi pov, the mc explains the supernatural phenomena and the presence of espers.
Its game of thrones but not = it contains the intrigue, but the main character does not play the dumb games.
Its scifi but not = here he refers to it being soft scifi, but when reading the above, you realize its not really fantasy nor scifi.
All fantasy tropes go out the window, the mc is not caught unawares and they do not do dumb shit and take precautions over precautions over precautions, the mc even states once 'I am not dumb enough to run into 100 people even if I can kill them all by myself.', while if you look at most powerfantasy protagonists, they will do just that.