YouTube is rated "T for Teen", and Minecraft is rated "Everyone 10+" in the Google Play Store. You need to adjust the app settings to allow it.  By default Family Link only allows “E” rated apps.1. On your phone open the Family Link app.2. Select your kid’s device to manage.3. At the top click on “Manage settings”4. Now click on “Controls on Google Play”5. Under “Content restrictions” select “Apps & games”6. Select the option “Everyone 10+” or "T for Teen" and confirm by clicking “OK” on the next menu.  You should now be able to see and download these apps in the Play store. Be sure to revert the settings if you want to prevent your child from accessing other apps with these ratings.