This is an evidence-based argument based on your opinion on a specific topic.
You may, therefore, use I and me, and a relevant personal anecdote that connects you, your experience, and/or expertise to the argument.
Paragraphs in opinion pieces do not tend to be as long as in full-length essays, so find a way to split longer graphs into two.
Remember to briefly and respectfully acknowledge the primary counterargument, make concessions where possible, and then respectfully refute it.
Take time with your conclusion. The most memorable conclusions leave readers both thinking and feeling. (They do not merely restate a thesis.)

I am a Chinese International student who is taking online class in China. Many of my friends in the United States do not understand why China can control COVID 19. But the United States, which values law and reason, cannot control it.

Thesis: The COVID 19 outbreak in China, compared with the United States, why can it be quickly controlled. How the social media influences people in United States think about COVID 19 in China.

Here is a website about Op-eds essay
https://www.theopedproject.org/oped-basics