Curved Monitor and Xbox One Setup

Setup

• Alienware 34inch curved monitor (AW3418DW)
• first gen Xbox One.

Problem

When I try to play Xbox on my monitor it displays in what seems to be full-screen mode, meaning there are black sidebars on the left and right sides.

Question

Is there a way to resolve this? I have seen videos of people be able to fix this with the Xbox one s and x but I haven’t seen one for the first-gen Xbox.