I am over 13 but it says that I cannot leave the Family Sharing due to a parents managing my screen time
How do I leave family sharingif there is still screen time limits?
iPhone SE
Ask your parents to remove the Screen Time restriction on the Family Sharing membership feature.
See how to use Screen Time on an iPhone, iPad, or iPod touch by clicking here --> Use Screen Time on your iPhone, iPad, or iPod touch - Apple Support