Karma is believing to be the repercussion for some actions or decisions we make. Most people see karma as the result for bad things.
Karma in simple words is “what you sow you reap”. For example, if you help someone with something good, you can also receive something good in return but not necessarily from the person you helped.
Sometime, better things than you have done comes your way, also when you do bad deeds to someone, you can also expect bad deeds to return to you.
Sometimes it can be worse than what you have done and the result of your bad deeds may come back to you from another source not necessarily from the person you offended.
Most people use karma as a guide on how they treat others because they are aware of the repercussions of all their actions.