How can I make the HDRI also be visible at the bottom and not end at the horizon

So I just want to place this HDRI into my scene as the skybox, but every HDRI I try stops at the horizon, and the bottom part is just solid color instead of the HDRI continuing.

Here’s a screenshot from Unity

And here’s a screenshot from Blender, and this is how I expect my HDRI to look in Unity

Nope, it’s all good. Apparently having the volumetric fog turned on is what was causing that. It was actually the fog I was seeing, not the HDRI not displaying right.