I like to watch Marvel movies. From them, I learned about revenge. In each movie there is someone who wants revenge.
It always ends badly, they suffer and make other people suffer.
I learned that revenge destroys not just someone else, it destroys you too.
In the movie Civil War, a doctor who wanted to get revenge on Iron Man made Captain America and Iron Man fight each other. They almost destroyed each other.
He also killed Black Panther's father, who was about to kill the doctor when he realized what revenge does. He did not kill the doctor, he learnt the lesson, and Captain America and Iron Man did, too.