Well both of the subjects are good in my opinion if you want to know how does a human brain works then psychology is what made for you but if you want to treat any disorders related to working ability of human body then you should choose physiotherapy.

Psychology has got better scope in Counselling , in the companies as Industrial Psychologist. But the duration for completing the psychology course may be more than the Physiotherapy and it has got more value.

Physiotherapy course is fine provided you should have placement in a Good and Reputed Hospital for job and you can do lecturership also.

Hope this would help you,

Thank you.