Meaning of “bounce back” - Learner’s Dictionary

bounce back

phrasal verb with bounce us uk /baʊns/ verb

to be successful or happy again after a failure, disappointment, etc:

After a terrible start the team bounced back and won the game.

If an email bounces back, it is returned to you because the address is not correct or there is a computer problem.

(Definition of “bounce back” from the Cambridge Learner’s Dictionary © Cambridge University Press)