Language toggle on different domains

Hi,

I would like to ask your help. I want to add a language toggle in my site menu. Found hooked elements and managed to add the flag.

1, How can I add dropdown function to implement more languages?

2, If I switch from English to German how can I do this step: englishsite.com/knife page will redirect me germansite.de/messer

Currently I can be on any page I will be redirected back to the HP if I switch language since only that URL added under the toggle image.

Basically I am looking for the function that this guy is using, but on different domains not on subfolders: https://bit.ly/3wmI7Su Used link shortener cause don't want to spam the forum.

Thanks