Do housemaid in UAE have a right to change their...

If the worker abruptly terminates the contract of employment, then the employer can request a ban against the worker and prevent him / her from working in the UAE.
In addition to that, the employer has the right to get compensation, due to the sudden and illegal termination of the contract.
Accordingly, we recommend you to negotiate with the employer in order to obtain a written consent to terminate the contract amicably and in mutual agreement.
Plus, obtaining no objection (NOC) to transfer the sponsorship to another employer / company.
But if you intend to change the profession, then the current work contract must be legally terminated and then leave the country and return again with the new profession.