3M Scotch-Brite General Purpose 7447 Hand Pad, Very Fine Grade, 6 in x 9 in, Pack of 20, Aluminum Oxide, Surface Preparation, Scuffing, Blending, Cleaning, Maroon

You can brighten that stainless steel using the 3M scotch brite scrubbers. You can find them locally in the paint department of your big box hardware stores. There are plenty of look alikes but the genuine 3M ones work the best and last the longest. https://a.co/d/0bli2zQO

https://www.amazon.com/07447-Scotch-Brite-Maroon-General-Purpose/dp/B0BYSY4629 go with the grain not in circles