Open Settings
Tap Screen Time
Tap Content & Privacy Restrictions
Turn on Content & Privacy Restrictions
Tap Content Restrictions
Tap Web Content
Select Limit Adult Websites
Add youtube.com to Never Allow
Add m.youtube.com to Never Allow
Tap Back
Go to iPhone Home Screen
Press and hold the YouTube app
Tap Remove App
Tap Delete App
Open App Store
Tap your profile icon
Tap Purchased
Find YouTube
Tap the download icon
Tap Done
Go to Settings
Tap Screen Time
Tap App Limits
Tap Add Limit
Select Entertainment
Select YouTube
Tap Next
Set the time limit to 1 minute
Tap Add
Go to Settings
Tap Screen Time
Tap Use Screen Time Passcode
Set a passcode
Do not share the passcode
Open Settings
Tap Screen Time
Tap Content & Privacy Restrictions
Tap Allowed Apps & Features
Turn off YouTube if shown
Open Settings
Tap Safari
Tap Extensions or Content Blockers
Enable a website blocker if installed
Open Settings
Tap Wi-Fi
Tap the info icon next to your network
Configure DNS or router-level blocking if available