You can change accessibility options within your apps settings.
1.
From the YouTube app You screen, tap the Settings icon.
2.
Scroll to and tap Accessibility.
3.
Tap or slide the Accessibility player switch to ON.
4.
You've completed the steps!
From the YouTube app You screen, tap the Settings icon.
Scroll to and tap Accessibility.
Tap or slide the Accessibility player switch to ON.
You've completed the steps!