Oh, physics... I think that's the aspect that was most sloppy in my game. I had so many ideas to implement, and I learned the hard way.
I was confident at the beginning that I could make the models entirely during the jam because I do a bit of 3D, but I spent all Sunday telling myself that I should have done 2D and a simpler game to start with because even worse it was my easiest gameplay idea I had with this theme...
In any case, thank you for your comments. It was to put myself in a rush that I did a jam, and I got what I wanted, haha