culture shock

Translations
культурный шок
Someone experienced culture shock when they moved to a new country.
Кто-то испытал культурный шок, когда переехал в новую страну.
Definitions
Culture shock is the feeling of disorientation and confusion that individuals may experience when they encounter a culture significantly different from their own, often resulting in emotional distress and difficulty in adjusting to new social norms, values, and practices.