How do I explain a layoff in interviews? after 4 years as a welding apprentice

I have an interview next week and I am unsure how to explain why I left my last job as a welding apprentice. This is my first time dealing with any of this. I also do not want to seem like a risk. What do you say?

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