Bug APK build on older phones experience gang green visual artifacts.

I am using Windows 10, Unity 2022.3.8f1 LTS, URP edition and am making a 2D game that runs fine on 2 more modern android phones however when building to test on older phones that use the marshmellow 6.0 Api I experience some crazy matrix visual artifact and lines running up and down the game and it only shows 30% of the screen.

I am wondering what could possible cause this perhaps there are extra steps like shaders or something that need to be done to get it to work on older phones maybe I don't know. I know Ipads are also using older api so I am worried about that too.

As far as I know I have set it up to target the latest api 33 or so and the minimum is set to 5 or 6 so it should work.
My best guess as to this error is that it's perhaps a URP only issue because I can run many app store games on the marshmallow 6.0 api and have made a Unity game for it before using Unity 5 Standard.

 

Looks like you have at least one frame where you don't have at least a full-screen Camera or a full-screen UI overlay image.

Any pixel you don't touch in a given frame can and will glitch.

 

Are you sure about that - then why does it work fine on mid range and modern smartphones?