Open the Facebook app or website
Go to Settings and privacy
Select Settings
Open Accounts Center
Tap Personal details
Select Account ownership and control
Choose Deactivation or deletion
Select the Facebook account
Tap Deactivate account
Follow the prompts to confirm
If needed, deactivate Messenger separately in the Messenger app by going to Profile picture
Select Legal and policies
Tap Deactivate Messenger
Enter your password and confirm deactivation