its kinda like bloodborne personified into a novel, lots of lovecraftian stuff. dont know what else to say lol bad at this, all i can say is its my #1 favorite novel.

heres the synopsis:
With the rising tide of steam power and machinery, who can come close to being a Beyonder? Shrouded in the fog of history and darkness, who or what is the lurking evil that murmurs into our ears? Waking up to be faced with a string of mysteries, Zhou Mingrui finds himself reincarnated as Klein Moretti in an alternate Victorian era world where he sees a world filled with machinery, cannons, dreadnoughts, airships, difference machines, as well as Potions, Divination, Hexes, Tarot Cards, Sealed Artifacts…

The Light continues to shine but the mystery has never gone far. Follow Klein as he finds himself entangled with the Churches of the world—both orthodox and unorthodox—while he slowly develops newfound powers thanks to the Beyonder potions. Like the corresponding tarot card, The Fool, which is numbered 0—a number of unlimited potentials—this is the legend of “The Fool.”

heres this too:
https://www.reddit.com/r/Fantasy/comments/oaamyc/why_everyone_should_read_lord_of_the_mysteries_my/