All right, so some of these fics I'm recommending as they have a few chapters and that you can binge read, haha.
LEGEND - A story where Mew interacts with prodigy child (more or less a "chosen one" ). I've read many "chosen one" fics before, but what makes this different is Mew actually trained the human character a bit to use psychic abilities and is in the legendary's perspective.
The Origin of Storms - I've read only a few chapters so far, but it's a pretty neat take where the humans are extinct and the Pokemon living somewhat similar to the Mystery Dungeon games (it's not a Mystery Dungeon fic, lol). Some of the Pokemon characters are actually from the Pokemon anime, but even if you don't like the anime or never watched it the Pokemon characters are cool.
Sike Saner's other story Communication is pretty good too as I remember reading it a few years ago, but she probably changed some things and I forgot most of the events that happened. I plan to reread it again eventually.
Challenger - A nuzlocke fic for Omega Ruby. There are some grammar/mechanic problems and the battles are bare at first, but the writer kept improving his battle writing skills each chapter and some of the ideas are interesting.
The Dusk Brawler - Deals with underground Pokemon battles. A slow start first chapter, but things picked up immediately second chapter.
Fire- A Mystery Dungeon fic where the Pokemon characters figure out an incident that involved a fire.
Sonata's two fics Dreams of a Peasant and Tales and Lore of Gyrah have some very cool world building!
There are a few other fics I read, but either they only have a couple chapters in or haven't been updated in a while. I do suggest checking other fics besides the ones I mentioned though!