How popular on which scale? Platformers are easily made and many games here are platformer. About 184000. But if you look at top rated, you will see, that games with story are favored.
Without marketing, your game will sink into obscurity. Let's see, how your passive marketing is set up.
You have these tags:
Platformer, Adventure, 2D, Indie, No AI, Pixel Art, Unity
Indie tells nothing, as all games here are indie. No-ai is a meta tag, you do not need to tag it. Unity is a meta tag, you do not need to tag it, you already have made-with-unity.
I have doubts, this is an adventure game. From the looks of it, it is not in the slightest an adventure game. It looks like a pure skill based action type platformer with some puzzles in a level structure.
So. You have a pixel art platformer. As all pixel art games are essentially 2d, that gives not much additional information.
That's 2 tags to give your game distinction. And a misleading tag (Note: if there actually is adventure content, you are good at hiding it). You could have used up to 10 tags on Itch. Plus 1 main genre.
How appealing is your cover?
Not much. Also, you have demo in the title. Why bother with demos, if there are thousands of non demo games. If you want, you can sell on Itch too.
What's a mil. A robot mil. Do I care to find out? No. Your cover looks like coming out of a tutorial. You can use animations in screenshots and covers, in case you did not know.
Your tagline is also not making me want to know about the game. But that ties in to the fact how story games are popular.
I would like to point out, that I do not like platformers in general. Maybe what you present appeals to fans of the genre. The problem is, reaching those fans. What you would need is a hardcore platformer nerd with a streaming channel that would play your game online. Or some other marketing, assuming your game appeals to a distinct target audience.
Itch has freestyle tagging, so you can tag things that are not in the suggested list. But it should be things that people seek out from time to time. Some associations I got, after glancing at your project: difficult, robots, music, puzzle, minimalistic, traps, fast-paced. And the few people that bothered to tag your game on Steam think your game is a runner game.