my render is not seen in the same way in the render preview as when you render the image and I do not know why it can be. Does anyone know why it can be or how to solve it?
Check your outliner tab:
https://docs.blender.org/manual/en/latest/editors/outliner.html
You probably have something set to not show in view and show in render ?
Or a modifier set to only affect the render.
The artifacts on the render picture make me think there’s geometry z-fighting.