It sounds like you're looking for the Malayalam thriller Oru Kuprasidha Payyan
Oru Kuprasidha Payyan (A Notorious Youngster) is a gripping 2018 Malayalam crime thriller directed by Madhupal. Inspired by real-life events, the film delves into the complexities of the legal system and the vulnerability of the marginalized. Plot Overview The story follows oru kuprasidha payyan tamilyogi
This is the classic "art-house dilemma." A film that needs to be seen by the masses (because it deals with mass issues) often fails to attract the masses to theaters due to lack of star power or heavy marketing. It sounds like you're looking for the Malayalam