operate off instinct

Translations
действовать на инстинкте
She tends to operate off instinct when making decisions.
Она склонна действовать на инстинкте при принятии решений.
Definitions
To make decisions or take actions based on one's natural feelings, intuition, or gut reactions rather than through careful thought or analysis.
Words
operate

verb
действовать
off

preposition
на основе
instinct

noun
инстинкт