What do I say about why I left my last job?, customer-service rep here

I have an interview next week and I am unsure how to explain why I left my last job as a customer-service rep. Thank you in advance. I also do not want to seem like a risk.

If a company has been in the news for layoffs, you can mention that. Often the interviewer already knows.

Keep everything in writing and save the confirmation numbers. It saved me later.