I think the worst job in the world is being a cyber wrecker.
First, they spread rumors without checking if theyre true.
They just want to earn money and views.
Second, toxic rumors can lead to many innocent people getting hurt.
Thats why I think being a cyber wrecker is the worst job.
Here's your first corrected composition, Jae Seo. I appreciate your sending it. Please take a look at the corrections below. 
What do you think is the worst job in the world and why?
I think the worst job in the world is being a cyber wrecker.
First, they spread rumors without checking if theyre true.
They just want to earn money and views.
>>> I think the worst job in the world is being a disinformation agent. They spread rumors without verifying them, driven only by the desire for money and views.
Second, toxic rumors can lead to many innocent people getting hurt.
>>> OR: Second, false narratives can cause harm to many innocent people.
>>> OR: Second, malicious rumors have the potential to inflict harm on many individuals who are completely innocent.
Thats why I think being a cyber wrecker is the worst job.
>>> Thats exactly why I think being a troll farm worker is the worst job there is.