First, a note, because it's important. You can formally run your build on Windows (whether it's .exe or HTML5), but the point of GameJam is not to throw projects, but games themselves that can be launched without unnecessary movements and installations of heavy editors and Unity SDK.
Therefore, most people simply will not appreciate the game simply because they will not be able to launch it even after downloading it, without understanding the project.
I figured it out, and I will say that the game has room to improve and refine. It's not ready yet. There are no sounds and other things. Is it worth it? Yes, the charm of platformers is traced, but visually it is also not ready, but I still understood the idea. Good work, but unfortunately the project is not ready.