get cold feet
become nervous or hesitant about something you had planned to do · lose courage
What's the situation?
Imagine you've planned a huge adventure, like skydiving! But then, right before you jump, you suddenly feel a wave of intense fear and hesitation. That's getting cold feet! 🥶 It perfectly describes that last-minute doubt or nervousness that makes you want to back out of something you previously committed to. It’s often used for big life decisions too, like marriage or a new job.