How do I cancel a Netflix family subscription?

I have a Netflix family account and would like to delete it, so that my normal, single subscription remains. I have only ever come across posts on the Internet that have shown how to cancel a normal subscription, but want to not me.

Does somebody has any idea?

Ask customer service

Simply downgrade to the cheapest subscription and change your password.

Then log off on all devices. And only register the device which it is allowed to use.