Hi Abdul,
If there is no Family Organiser on the group, follow the steps below in order to remove the Family group.
You are in a catch-22 situation. The following workaround should help:
https://www.yourwindowsguide.com/2025/12/microsoft-family-safety-require-permissions.html#gsc.tab=0
Create a new Microsoft account so you have a fresh “adult” account that can act as a Family Organizer.
Sign in with this new account and go to family.microsoft.com.
Create a Family group (or join one) using the new account.
Add your current Microsoft account to this Family group and accept the invitation when prompted.
Once your current account is part of the family, you’ll be able to change its Date of Birth because the new account acts as the organizer.
After updating the DOB, you can remove the accounts from the Family group if you no longer need it.
I hope you find this information useful. If you have any more questions, don't hesitate to reach out. Otherwise, please take a moment to accept the answer. Wishing you good luck! A Windows MVP writes content on the above website, so it is safe. However, do watch out for the ads. It should translate into your Browser language automatically.