SOLVED So the tv show was City on a Hill, starred by Kevin Bacon and Aldis Hodge.
The characters I described were played by Amanda Clayton (Rob A’s wife), Mark O’Brien (Punchable brother) and Jonathan Tucker (Rob A).
PS: I found it just browsing throw IMDB, checking the casts of tv shows similar to The Wire and trying once and again.
ORIGINAL POST:
What I am about to tell may be a “side story” and not the main plot of the series.
There is a robbery of an armored vehicle. During the robbery the robbers kill the vehicle’s guards. One of the robbers (Rob A) has a wife and daughter(s). He also has a brother who is a bit of a loose cannon. The thing is, the loose cannon brother gets in trouble with the police and tries to sign up for the next heist Rob A is planning so he can snitch.
Other info: Rob A is married and has a daughter or two, and when he’s not robbing banks he has a job at a supermarket (or some other sort of retailer job). They lead a middle-class family life. Rob A’s wife owns a hairdresser.
I don’t remember the name of any of the actors, nor any other series or movies they’ve worked on.
EDIT: for example, this could be a side story of The Wire or The Shield, but checking their casts in IMDB doesn’t ring any bell.
EDIT2: Chatgpt and alike weren’t of any help with this one.
EDIT3: Rob A and his wife hide the cash from the robberies behind a mirror in their home. Also, the mood of the series is quite dark: similar to The Wire or The Shield.