VampSideload it from apk mirror or some other android hosting website
I know it's not Asus' fault that Rog phone or any other Asus' phone is not supported by the Adobe premiere rush or newly released Adobe Photoshop camera, but having a color accurate display and powerful internals really didn't makes sense that we can't actually edit video using a professional video editing software. I hope to see Asus partnership with the Adobe in the future soon.
P.S. even OnePlus 6T has support for Adobe premiere rush 🤷♂️
Adobe products unavailable for ROG photo 2