APPLE INSIDER
A new supervised mode for YouTube will feature account limitations and three content settings that help parents control what content their children will see.

Today, we are announcing a new, supervised experience for parents who have decided their tweens and teens are ready to explore YouTube. More details here: https://t.co/fY5vE0NsM1 pic.twitter.com/W8FsC6EhQd
— YouTube (@YouTube) February 24, 2021
Source: APPLE INSIDER