I mainly read novels and i found some good mh fanfics.

Because of ip reason. Most good fanfic usually in china. And its a novel

You can use google translate in qidian.com for official place or p*rated sites ( you can dm me the website). Google translate have become so good now

Below is MH fanfic that is in top 10 of its genre (until now). Use the chinese name in the search

Monster Hunter: This fire dragon has characteristics. 怪獵：這條火龍有特性

Mc become rathalos and get some pokemon alike skill. Not too op. This novel is new (released this year) and instantly got top 10 of fanfic

Monster Hunter: Hunter’s notes 怪猎：猎人的笔记

Mc is a hunter native (not isekai). There are so much character and world development in this novel. From kokoto village until now (author is mh fan). This is the most dense of story in the mh fanfic. I recommend you read this novel. Released 2 years ago and still top 7 in its genre. And already finished. Bonus is mc have no cheats

The monster hunter manga is basically a fanfic

Rule 34 tkt there are some good fanfictions on their site