The term restricted implies an lack of freedom or limited access to certain things. Some synonyms that could be used in its place might be confined, limited, controlled, regulated, or constrained. These words all suggest the same kind of limitations implied by a restriction, but with slightly different nuances. Confined might imply a more physical restriction, while limited might imply a lack of abundance or variety. Controlled or regulated would suggest the restrictions are established by some authority or external force, and constrained might suggest a more internal or emotional limitation. Ultimately, the choice of synonym would depend on the context and intended meaning of the sentence.