Thank you for your question, and welcome to StackOverflow.

Internationalization and localization are complex subjects, even for a simple application, because it touches many parts of the application code, content and user experience. While we may intuitively understand what we want out of a multi-lingual app, developing that app requires special skill.

I'd recommend following a tutorial that can explain the different steps needed to add other languages to your React Native app. You'll need to:

• Create a default React Native app
• Include your dependencies
• Create translation files
• Add multi-lingual support
• Create a drop-down language selector
• Implement useTranslation

Here is an example tutorial that uses i18next and react-native-localize to create a simple React Native language switcher: https://www.crowdbotics.com/blog/how-to-offer-multi-language-support-in-a-react-native-app