(someone) melts down

Translations
(кто-то) выходит из себя
She often melts down under pressure at work.
Она часто выходит из себя под давлением на работе.
Definitions
To 'melt down' means to lose control of one's emotions, often resulting in crying, yelling, or other visible signs of distress or frustration. It is commonly used to describe a situation where someone becomes overwhelmed and cannot cope with their feelings.