Film about revenge?

Can someone recommend a film (Netflix or Internet) that shows the bad effects of revenge. So since the last time I've had very strong thoughts of revenge on a toxic best friend (old best friend now I've left her because I can't stand her). I want to repay her for the pain I suffered because of her. But I know that this is not a good solution, so I need something that shows me that revenge does not bring anything, such as a film / series or even a documentary.

John wick

Lol forget it didn't read the question correctly