You might have the app on your phone, so why open a browser on a laptop?
Go to → Settings → Security and Login → Get alerts about unrecognized logins . Choose to receive alerts via email or Messenger. This way, you’ll be notified if someone logs into your account from a new desktop. facebook com desktop login
If enabled, the login process requires a second verification step after the password is entered. You might have the app on your phone,
You can see where you are currently logged in by visiting the Meta Accounts Center Suspicious Activity: facebook com desktop login
Use a physical USB or Bluetooth device if previously registered. Malwarebytes Security Checklist Check for Alerts: