Hi,
For those of you new to LitRPG, I'm pretty sure that you haven't encountered the sub-genres yet..
One of those is the "Dungeon Core" sub-genre.
Something to add to your "to-be-read" list is a story called "Blue Core". https://www.royalroad.com/fiction/25082/blue-core

This story is not entirely typical of the genre, which normally has the dungeon acting as some sort of fixed in place "Murder Hobo", focused on levelling up by means of build more floors, and killing delvers to accomplish that.
Blue Core has some of the elements of that but is a much more nuanced story, with actual character building and lots fewer plot holes and and the only "*Deus ex Machina*" is a Dragon ;-)

The world-building is outstanding and the concept pretty unique within the genre. There is some sexual content, but chapters that are NSFW are clearly marked as such and can be safely skipped.

The author's blurb to descibe the story is:

"Dungeon: A place full of monsters, traps, treasure, and death. Those are the Great Dungeons, with unplumbed depths below the roots of the mountains.
That's not for me.
Dungeon: A place of rape, torture, and death, to control and corral enemies and slaves. These are the Red Cores, from which the mage-kings draw their power.
That's also not for me.
I don't like monsters. I don't want adventurers. I want to stay well away from enemies and slaves.
Fortunately, there are alternatives..."

Enjoy!
===
* El Gato de Fuego (The Fire Cat) 4:920/69 * Pedasi, Panama

... Just because everything is different doesn't mean anything has changed.
--- SBBSecho 3.14-Win32
* Origin: The Cat of Fire aka El Gato de Fuego II (4:920/69)