There's no such thing as bad actors. Just people who's interests are not aligned to yours (you are their "bad actor")
Have a look at eg https://www.lesswrong.com/posts/tJQsxD34maYw2g5E4/thomas-c-s... or https://www.lesswrong.com/posts/2SeN2MjmMzZB25hBo/insights-f... for some ideas about alternative definitions.
You could also go by something like 'You are not a bad actor, if (outside of emergencies) you don't lie, cheat, murder or steal.' Or you can go with something closer to game theory, and emphasis cooperation in something like a prisoner dilemma.
There's no such thing as bad actors. Just people who's interests are not aligned to yours (you are their "bad actor")