Hello,
is it possible to hack specific mc accounts?
anything is possible
if you can hack the server
What the fuck am I reading.
It isn't really possible to hack specific accounts unless you have an exploit that allows you to log into any account without a password or email, or you retrieve the password and email (by bruteforcing the account, social engineering or whatever).
Other than that not really.
Good luck, you probably won't achieve anything.