9:16 content gets cropped on the sides with certain phones?

I have a OnePlus 9 Pro with a resolution of 3216 X 1440 and an Aspect Ratio of 20.1:9. My 9:16 content is being slightly cropped on the sides when seen on youtube shorts and instagram reels. Tiktok seems to show the whole thing. Here are links to a sample video I made for testing on IG Youtube and Tiktok where you should be able to see the tips of the diamond and this folder contains images of what I see on the 3 social apps. I noticed this issue when trying to build a template for social app button overlays in order to properly frame video and graphics. But this extra cropping weirdness is throwing me for a loop. Has anyone else noticed this or have any suggestions?

Thanks!