Sentence examples for a bad actor from inspiring English sources

The phrase "a bad actor" is correct and usable in written English.
It can be used to describe someone who behaves poorly or unethically, often in a specific context such as business or politics.
Example: "In the world of finance, a bad actor can lead to significant losses for investors and damage the reputation of the entire industry."
Alternatives: "a wrongdoer" or "an unethical individual".