Taking video

Looking for tips on how to use my iPhone 13 to take a video of display without the video being washed out or overpowered by the colors in the display

I have my brightness set to 50%
I know lots of folks use 30%, however I am about 500 feet from the road and 50% is just what I decide to use

Thanks in advance
Bert-nc

Have brightness much lower just for the video. i would say around the 20% mark max.
Also, download the Blackmagic Cam app. Much better control than the standard video app.

Once in the video app,
shutter, FFS 50, shutter 1/50, iso auto.
Then hold the screen on one of your props, this will lock focus.

Give that a go