When do we congratulate People? Or what is the purpose of congratulate People?

we congratulate people when they was achieved best result of their work or they was reach a great achievement.

congratulate people :When you congratulate someone, you wish him or her joy, usually to celebrate an accomplishment or good fortune. Your joy can take the form of verbal praise (“Well done!”)

We congratulate others when they achieve success or luck
The goal is that the person is motivated to do something better

#SemogaBermanfaat