A better representation of real Italian mafia in movies is offered by the TV show Gomorrah.

It's a strong antidote to those romanticizing crime.

In US it should be available on HBO Max.

https://en.wikipedia.org/wiki/Gomorrah_(TV_series)

The first two seasons are great, watch it with subtitles (fun fact: in Italy it was also shown in tv with subs because most people cannot understand neapolitan dialect).