Master

In this Tamil-language action thriller film, Master, a college professor struggling with alcoholism is assigned to teach at a juvenile detention center. He soon discovers that the inmates are being exploited by a ruthless gangster to commit crimes. The professor decides to take matters into his own hands and sets out to stop the gangster and protect the young minds. With the help of an NGO worker and a reformed inmate, he battles against the criminal and ultimately triumphs, avenging the deaths of two young boys who were killed for their involvement in the gangster's crimes.

You can stream Master on: Amazon Prime Apple TV Store

Some movies that have similar genres and were produced around the same time as Master include One Battle After Another, Citizen Vigilante, Normal, The Furious, The Punisher: One Last Kill, The Accountant 2.