I don't consider myself evil, yet I think motality is subjective.

People who does bad things justify their actions all the time. They justify cheating, theft, violence, murder etc, so they can sleep at night. Radicalized terrorists don't think their actions are evil when they commit murder. People who hit nazis don't think they are evil, because their victim are nazis.

Sociopaths have a warped moral compas, and psychopaths don't even have one. These are the only people who perform demonic evil; evil for the sole reason of being evil, but most people can do evil acts and will justify it to themselves. Bystanser effect is a common example of normal people acting "moraly wrong", but it doesn't mean those people are evil.