I need a lawyer that can help me breaking a contract that I have from my real estate brokerage as independent contract

I am a real estate agent and I started off my contract back in June 2021 with the brokerage as an apprenticeship program. I am trying to move on to a new brokerage but I need to break this contract first, I talked to the owner of the brokerage and they said you need to pay $5000 if you want to leave but nothing about the termination is mentioned in the contract. He even mentioned himself that it is not in the contract. What do I do in this situation?