Translate Posts Automatically - Wordpress

Hi,

I'm using WP-Script "WPS Mass Embedder" on my porn tube.

I want my website language to be Polish (for example). But WPS Mass Embedder posts videos in English.

I tried TranslatePress but it only translates posts from the front end.

I want my whole website content in Polish. I don't want users to translate my website manually by selecting the language from the bottom but display it in the Polish language.

Please advice.