I wish I'm good at this, this is a very rewarding task. 3 BTC is a huge money for now.
Good luck to whoever can recover this and to you OP, you might be holding more money on that wallet.
If you are done with your useless post then let me be real to op. Hi you will not get your money from this wallet. Either because you are lying and you are the thief in the first place. Sorry if that offends you. Or simply because brute forcing the password of a btc core wallet has never been successful and would take hundreds of years ( at the least ) for a decently strong password.