A desire arises in one's mind, prompting us to act upon it. Why such desires arise are due to a multitude of reasons - cultural conditioning, advertising, etc. When such a desire arises, we "want" to fulfill it. So from this perspective, there is little free-will in what we can "want".

Through meditation, when there is the ability developed to detach from the thoughts that arise in one's mind, one can choose to not act on desires that urge action. So, there is then the possibility of freedom.