@carson321: This is a strange one. Creating a child account does allow you to manage which apps they have access to on their device, however I'm not sure if this also applies to certain Settings as well. To check, on your device, please head to Settings > Select your Samsung account > Family > Select your child's account, then explore the controls from here e.g. Allowed apps.
If you have set up Google Family Link via Settings > Digital Wellbeing and parental controls, then I also recommend checking the settings here to see if this helps. For further information, please take a look at the link below.
