I was fired without a cause

I'm a 27 years old woman who was fired from my software engineer job without a cause. I was with my company for 9 months. A few days ago I was called into the office and was fired. I'm honestly really sad because I liked my old company and I got along well with everyone. My manager said it was not anything I did, but the company decided to restructure the teams and is laying off people. I'm not sure how to go about it. What do I tell people at interviews? Do I just keep looking for a new job?