IELTS essays: What if I can't find a good example for my essay?

We were talking about examples in IELTS essays and, after we had looked at a bunch of bad examples, a student asked me, "What if I can't find a good example for my essay?" Here is my answer, which is twofold.

1️⃣ You don't always need an example. You need one when you want to illustrate a more abstract idea. But what if your ideas are very clear already and don't need an illustration? Then you don't need an example.

2️⃣ If you think you need an example, but can't think of one, you're in trouble - you are writing about something you don't know and can't convincingly argue. You shouldn't be writing that at all. Consider coming up with another argument.

What would be your answer to the student's question?❓