Hi jon-michael.jackson,
The refections that you see is based on preview settings. To have your own environment for these reflections, you can set up a Sky object and place a texture on it. You will find textures in the Content Browser [if installed. If not: Main Menu> Help> Check for Updates…].
Content Browser: Type into the search bar hdr and drag one of the textures into the material>Luminance channel>texture.
You can also use the Physical Sky.
I have created a screen capture for you.
https://www.amazon.com/clouddrive/share/f9SUJs0uQDv7q4dUj24TkABoeA30CDwAnF7Zls9qCG6
Let me know if that works, otherwise, please share your project file, it must be zipped.
As a side note, the Environment Channel in the material allows for that as well, but it is typically only used when really needed, as it is limited.
All the best