Hi,
Thank You for choosing us!!
As per your query, if you want to switch between languages on your site, we recommend you to use Google Language Translator Plugin.
Here is the link: https://wordpress.org/plugins/google-language-translator/
Surely, this will work for you.
Add or Upload this Plugin, install and activate it.
Once you activate it, check your site, you would be able to see a button “Translate” on your site.
For the Settings of this Google Translator plugin, just follow below steps,
Go to -> Dashboard -> Settings -> Google Language Translator(Click on it) -> It will take you to Settings Page (Here you can select different languages and many more settings would be there).
Please let us know if you get stuck anywhere or need any other help with the theme.
Thank You