sad man walking alone looking down in a park

30s adult alone angry anxiety anxious ashamed attitude bad behavior bereavement boy cheated complaining concerned confidence confused depressed depression desperate disappointed divorce down downcast emotion error esteem fail faint feeling frustrated grieving guy heartbreak introspection lack lament loneliness lonely looking loser low male man mistake misunderstood negative outside pain park people person problem regret remorse sad self shame shock single stress stressed suffering trouble unemployment unhappy walking weak worried worry