Ok and if I deactivated victims facebook account then what happens? Is he able to report facebook? Supposing that I removed his email and mobile from the account and scheduled it for deactivation.
They can quite simply reactivate it.
When you remove an email, change a password or do ANYTHING that then asks you to
Re-Enter your password then Facebook flags this as suspicious activity. Once this happens, they log everything that happens including IP addresses, Web Browser, Operating system and Username for your computer.
You just need to make sure that nothing traces back to you. Do it on a clean install of Kali Linux, use a VPN and use proxy chains! Practice hacking yourself or your friends
(with permission!) before actually hacking somebody! Learning how Facebook alerts people etc will help you cover all the tracks you need to.
