Unless you have a very strong reason to continue working there (Visa tied to the job comes to mind) then it's probably time to leave. It's highly unlikely that

Unless you have a very strong reason to continue working there (Visa tied to the job comes to mind) then it's probably time to leave. It's highly unlikely that your manager will change, and you shouldn't waste your energy on trying to remedy the situation. As the age-old adage goes, people don't leave jobs, they leave managers.