Your argumentative topic needs to be debatable so you could find both arguments and counterarguments for it. For example, there’s nothing debatable about “People needs air to breathe;” but “Students don’t need homework to succeed” might work well.
Also, your topics should be compelling, with strong evidence and at least two conflicting points of view, and written with persuasive language, so readers could see both sides of a problem and choose one they favor most.
Do your best to take a topic that’s interesting to you. Shape your argument and list the points you’ll use as evidence for it. Also, you’ll need to make a list of points against your argument and gather evidence for them too. In your writing, describe both sides but try to prove why your argument is correct.