In the video I shared in my third post they highlighted that "properly equipped" trucks have access to side camera views. That was especially important because it confirms that the camera views you're looking for do not come standard with the Surround View camera option. I didn't post the video to show you how to use the cameras, but to just to confirm my previous post that you need the Trailer Reverse Guidance option.
I took a harder look at your window sticker and noticed the Towing Technology Group and started to search around for what was included in that package during the 2021 model year. In my mind it wasn't a given that Trailer Review Guidance would be included... because common sense and vehicle manufacturers aren't great friends and things aren't always where you'd expect them to be. There was a chance that they might of thrown it into the Limited Level 1 package instead, which you haven't got. I'm not sure where to find reliable previous year vehicle package/option information and so nothing came up real quick.
I got caught up in real life stuff before I could definitively say whether or not your truck has the trailer reverse guidance feature, because that's the difference between a trip to the dealer (or perhaps AlfaOBD) and being sh*t out of luck. If you have confirmed that your truck has Trailer Reverse Guidance then you need to run to a dealer or start looking into AlfaOBD to see if it can help. If you're not entirely confident that you've got that option, then you need to continue down the path I had started. You may be able to use your VIN to get more specifics about your build.
I'll be honest, it set me off being called out as unhelpful and LOL'd at for trying to help you out.
