I have a few problems with this game.
1. You don't respawn when you fall.
This wouldn't be to hard to fix.
2. Z-fighting is EVERYWHERE.
(If you don't know what Z-fighting is, It's basically two textures in the same place which keep replacing eachother.)

Shows promise but walking around isn't much of a game

I like the style. It would be interesting to see what kind of game would you make if you developed this idea further. So far, there's not much in terms of gameplay – just walking and jumping around on objects forming together a loop. How about turning it into an actual platformer with a proper obstacle course?

The movement and camera aren't that great. "Rotate in place and move forward" isn't well suited for a platformer, and the worst offender is how the camera moves when you jump – making you unable to see the ground below you until the last moment. I'd look up some videos of well-made 3D platformers to see how they handled the movement. For example:
Super Mario 64: https://youtu.be/m44y7Q-QtdE?t=58
Rayman 2: https://youtu.be/NmTuuuxHO-E?t=256

Also, the game should restart when you fall, there are some colliders which don't match the objects below them, especially the stretched toruses (making you look like you float) and right at the start, there are two objects at the exact same height overlapping, which makes it flicker (move either one of them up or down).

Nevertheless, as a first game, it's pretty damn good. Good luck with your future projects!

so the camera is pretty jarring when jumping, the no textures thing is ugly but could be used for a clever surreal game idea, and there is no goal or challenge other than figuring out how to jump with this bad camera, level design with no rhyme or reason. no sound in general, and no way to restart without using the gamemaker's reset button,