Facebook Admin Email or Username

I have an expired domain that i can buy let's say 1234.com and there is an facebook page which was part of 1234.com is there any way to find which email id is used to login to that facebook page say if its [email protected] I can buy the domain and create an email id out of it

U could in a long shot buy the domain and claim the page as your business. As I said long shot this used to work years ago not sure anymore

I found this online https://strategylab.ca/how-to-get-your-facebook-page-back-2019/ trying this method will update if it works