In my opinion Othello lacks so much on being a hero. I see many analysis considering him a tragic hero or simply as a hero but from what i understood Othello is great only on characteristics such as fearful, insecure, anxious and unable to take control.
As much as i was trying to feel pity for him it was impossible because i could not ignore the fact that it was his weaknesses which led him towards the tragic flaws and not Iago. Iago was just an excuse and heroes do not have excuses.