I signed with my manager mainly to get out on theatrical roles, but my manager wants to take money from my commercials and everything else across the board?

Remember that agents and managers work for you for free until you start booking consistently. So, it is not uncommon for a manager to receive a commission from your commercial revenues as well as your theatrical revenues. Perhaps have a qualified entertainment attorney look over your contract before signing on the dotted line. At the end of the day, you and your reps will need to comfortably agree on all aspects of your contract with them or seek other representation.