I cant hide my skybox without removing the lighting, help!

Hello, I’m trying to make a game with realistic lighting by using lighting from HDRIs, but I can’t seem to hide the HDRI without removing the light. There is no properties with transparency in the sky’s properties and I don’t know what to do. Please help!

  1. The image with the HDRI

  2. The same image but without the HDRI


    still realistic, but not as much