What do I say about why I left my last job? - 3 weeks in

I have an interview next week and I am unsure how to explain why I left my last job as a graphic designer. I worked as a graphic designer before this. I have been practising in the mirror. What do you say?

Say it plainly and move on to what you can do. Interviewers usually move on if you do.

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