You might be wanting to reduce glare and improve night viewing on the YouTube app. Here’s how you can minimize flickering and blue light.
⦁ In the YouTube app, tap on your ‘account picture’ on the top right corner.
⦁ Head to ‘Settings’ section.
⦁ Under ‘General’, switch the ‘Dark theme’ toggle on.
The theme for the app will turn dark thereby reducing eye strain and enhancing visual ergonomics. It will also save you some battery juice.