Thank you so much for taking the time to play my game, and I really appreciate your honest feedback.
I've been tweaking the movement speed and jump height. After some testing, I think the movement feels much more snappier and more balanced now. Unfortunately I cant update the game right now.
As for the moving platform, if i have to guess the reason you think the platform physics feels off is when you walk the opposite direction of a moving platform you will slow down. This is because Godot handle the moving platform physics for me by adding the current floor velocity to the player velocity, but with the side effect subtracting the player velocity by the platform velocity when moving the opposite direction. I have fixed this issue by adding the subtracted velocity back when moving the opposite direction.
I'm sorry for the frustrating experience and thanks again for the feedback. Its extremely valuable for my first game jam!