Just turn off the Dark mode . Stop using your phone in the dark mode and you will see that the pixel burn marks will disappear. Though this may not solve the RED TINT issue while watching HDR videos, but your overall experience will be a but better. In my case, i was having pixel burn in the status bar area and was seeing green tint and green lines on my display and lock screen respectively while on Dark Mode. So switch back to normal mode and you will be good to go.
