Whats your username and server you play on? I can't really say I can help THAT much since I'm not amazing at the game, but I could offer a few tips and if anyone else were to try and help you, both of these things are required.
Send a personal message on hearthpwn (please include discord and hearthstone usernames so I can add you), I have hit legend every season this year, multiple top 500 finishes, some open cup wins. I'd say I am experienced enough to get you to rank 10. Also, its free.