Heyope, welcome to itch. There's all kinds of games here.
My first recommendation would be to try check out anyone you see. Be it the comments on this post, the comments on other posts or the comments on games. Many people on here are developers so it is easy to find games by just clicking on someones profile.
And of course you can search via Tags on itchio. If you use RSS feeds you can even subscribe to them and get all the games of a specific genre.
Some stuff I can recommend specifically based on your current interests (they are either atmospheric, Puzzle games, or have some unique/experimental mechanics):
Context Catacombs - A really fantastic Puzzle game. It got a fantastic atmosphere and really unique mechanic. The Puzzles are also some great stuff.
Miss Paint - A simple Puzzle Platformer with a very unique mechanic
Drone delivery Despair - A dreadfully dark atmospheric game... Though it kinda made me wanna speedrun it
Yuuma Game - Really Unique Bullet Hell game
HEDGEWIZARDS - Unique jumping Mechanic
Birdsong - Very Unique short Metroidvania
A time Travellers Guide to past Delicacies - WEEEEEEEEEEEIIIIIIIIIIRRRRD (seriously I have no clue what this is meant to be about)
Dire Decks - Classic Unique Itchio
We Become What we Behold - Thoughtprovoking small game about news
let there be Knight - Puzzle Game
Fragments of Euclid - really atmospheric Puzzle Game
(Do check out all their Developer pages too)
And for any further recommendations I am sadly too lazy.
I do have a list of all the games I played last year. It is in my 2023 Lookback. There's quite a bunch of games there which are really cool.
If you're interested in my games, I usually try to make smallish games with maybe a little interesting thing, but nothing too special. Currently I don't have many projects on here because I've been polishing a single project for A LONG time now. Though that'll be finished soon