textures appear very dark even with additional light sources?

Hello, I hope this isn’t just a very easy fix that I’m overlooking, but when I import the FBX of a model I downloaded, the textures all appear very dark, but they are still there. I’ve tried adding multiple light sources, and the textures seem to just completely ignore the light source.


I’m pretty new to this sort of thing, so I apologize. Here is also a link to the downloaded model if that helps. https://www.turbosquid.com/3d-models/korg-electribe-es1-3ds-free/573829

make sure the material textures are setup properly. lots of info on this.