Why can I walk through my scene objects?

Hello! Thanks for taking the time to read this post! Simply, I am having an issue with when I import an object from Blender, and I try to walk into my object, I walk through. I have been trying to figure out how I can have it so when I walk into it, I can’t go through it. I have tried making rigid bodies for both my map as well as my object. However, they just fall into the abyss. I am trying to have it so that, 1. Both the floor and object don’t keep falling into the infinite abyss, and 2. I can not walk through my object.
Thank you,
StracurioProductions Jack

I have done my own research and fixed it! I needed to add colliders.