Simple "Language choice" Solution?

Hi All,

I have a question that might be simple or it might be not; I don’t know anymore.

I have set up a website for friends in Egypt (https://www.nilevalley.nl/nw) and the content is available in there different languages: Dutch, English and German (and more translations of the site are on their way).

For now, I have chosen to put the different pages each in their own menu, but displayed on all pages, and although (i think) it looks good, I would like to find a solution for visitors to see the site in their specific language only.

Now, on the old website (https://www.nilevalley.nl), seeing only content in one of the three languages was easy; just have the visitors make a choice on the landing page and incorporate the specific language menu on the specific language pages only.

I have been looking for a simple solution of doing the same in WordPress, but so far I only found very complex solutions, like multisite installation, etc. (at least for me they are complex as I am fairly new to WordPress).

So,?my question to you WordPress wizards: Is there an easy solution to my challenge, out there, or should I reconsider, start over again and do a multisite install????

Any help would be appreciated!

Thanks!