Complex sentence: Rocco was a feared mobster in his day but lost some credibility when Richie Aprile bested him in a fist fight in the 1970s and took his leather jacket trenchcoat, after this brawl, Rocco was ashamed at being beaten by Richie and left New Jersey.
Split into simpler sentences: Rocco was a feared mobster in his day but lost some credibility when Richie Aprile bested him in a fist fight in the 1970s and took his leather jacket trenchcoat. After this brawl, Rocco was ashamed at being beaten by Richie and left New Jersey.