Hello @beanz, many consider karma as an invisible force that guarantees a just world, but the reality is that sometimes bad people come out well and sometimes good people do not receive their reward, in conclusion, I do not believe in Karma as a concept...
Then the question is can you be at peace with this?
I think it is a misconception that karma is about balancing out the world's circumstances and making it "fair" in accordance with their actions.
Definition
Notice it doesn't say anything about who "decides" or whether the results are measured the same way.
This is a somewhat supernatural definition that I don't completely believe, however I believe it comes from a phenomenon that is real. I don't know what to call that phenomenon other than karma.