How to translate WordPress theme, plugins
If you want to translate your site to another language, please follow steps:
1. Install Loco Translate plugin to your site.
2. Go to Dashboard -> Loco Translate. At that, you can select the theme, plugins to translate to your website.
3. See more about this at https://localise.biz/wordpress/plugin/beginners if you have any problem when you translate the theme, plugins
If you want to build multi-language you can use WPML plugin.