Leila, my wife is a Licensed Clinical Psychologist who works at a hospital. I can speak, at a high level, on her behalf. There is a wide variety of opportunities in hospitals for psychologists. These range from general mental health to specialized areas, like health psychology. My wife has worked in health psychology (where she specialized in using CBD to treat chronic pain), general mental health (where she saw cases of depression, anxiety, chronic pain, bipolar disorder, schizophrenia, etc., etc.), and even a bit of neuro-psychology (where she performed assessments to determine the level of brain damage people with neurological conditions/injuries had). To figure out what she liked best, she participated in several practicums during her doctorate, as well as a part-time job in a private practice, and then a 1-year internship (which is required to get your doctorate and psychologist license). It's a long road to become a psychologist... but you can really impact people's lives in a positive way. Good luck.