Explaining a layoff without sounding bitter after 10 years as a home health aide

I have an interview next week and I am unsure how to explain why I left my last job as a home health aide. I do not usually post, so bear with me. I have been practising in the mirror. Do they ask follow-ups?

Thanks for writing this out. I went through something close to it 11 months ago, and it got easier once I kept a simple log of every call and form.