Please, i really need help to unbind my Facebook account :(

Dumbn00b

I can't retrieve my Facebook Account
Because it has been permanently deleted
And i cant seem to find what informations i need to tell Facebook and how can i tell them that?(Because afaik Facebook doesnt have a customer service like in Mobile Legends, but just a help center)

Also,
When i press "Unbind Facebook Account", it asked me to make a new Facebook account
I guess that needs to be fixed :(

Please help ;(