The movie is about a foreigner (an American) who owns thousands of properties in Europe. He acts entitled because of it. He doesn't like that there are older people in their 50s and 60s working for his company so he tells a manager to get rid of them and bring in new blood. He is in his 40s but he's not married and he doesn't have children. He has sex with prostitutes. And he kills European citizens.
He killed law enforcement officers for doing their jobs. He killed innocent people in a car (men? women? children?)simply because they didn't change lanes.
There were some cool moments and some good points made but it was really badly done.
Not to mention the gaping holes in the plot. He asks a woman in the hospital if she wants justice and she says "Yes" and that's the end of it. The movie never shows the vigilante going after her assailant. Then there are three teenagers in a park assaulting an innocent guy. Two guys and a girl. The vigilante breaks the two guy's bones but the girl magically disappears.
I understand the point it was trying to make and I agree with that point, but it was so terribly executed.
Sounds somewhat like that old Charles Bronson series "Death Wish" and its sequels. Only from your description the protagonist doesn't seem to have a motive like the Bronson character did.
His motive was when he was 8 seeing his mother stabbed in the neck by an immigrant for no reason and watching her die in front of him, and wanting to bring justice to victims - victims of both the criminals and the “justice” system, a system which he sees as complicit. How many times have people on this site complained about no accountability?