How to fix this weird lightning

[chechu]

Hi everyone.
So i'm making a project for school, so I did this.
I rendered with octane, but i wanna know how can i fix those weird 'shadows' on the object itself, and if i can make the light so it doesnt reflect on the floor.
Thanks in advance to everyone and sorry for newbie questions

[masterzone]

I think you have a mesh problems. There are some discontinued area or inverted normals area. Did you try to hit "Allign normals" on the mesh menu?
Otherwise try first the "optimize" command you find on mesh > commands sub menu.
I hope this help you
Alex