Why do bad people exist? Because they are stuck with experiencing the good experience/happiness in their bad way. If they knew to experience the same good experience/happiness the good way without putting any extra effort, they wouldn’t continue with the bad.

Am I a good person?
No not at all… not entirely at-least… I am still stuck into making many mistakes and I am not finding my way out. And at places where I have found ways, I do not know at the moment how to reach there.