Which is the easiest way to add internationalization to existing Next.js project

I'm currently working on a Next.js project and I want to add internationalization support to it. I'm looking for the easiest and most straightforward approach to achieve this. I've heard about a few libraries like next-intl，next-international，next-i18n-router and paraglide-next, but I'm not sure which one would be the best fit for an existing project. Has anyone here added internationalization to their Next.js app? If so, what library or method did you use, and how was your experience with it? Any tips or recommendations would be greatly appreciated!