I have created following store structure;
Website: xxx.de Store: Germany Store View: German
Website: xxx.nl Store: Netherlands Store View: Dutch
Website: xxx.fr Store: France Store View: French
I want to use all languages on other websites too like French and German on xxx.nl with Dutch language. I don't want to create same languages under stores it's to much work for translate and I do use "Add Store Code to URLs " option I will keep it too for all websites
If you are still interested, here is a detailed guide on creating and configuring a Magento multi-language store. It also includes essential SEO tips and explains the way to translate your store automatically, making the process of reaching international markets much easier:
https://magefan.com/blog/configure-magento-2-multi-language-store
You could use a translation extension or a centralized language management tool to share translations across store views. While figuring that out, I’ve been testing 89F and it’s surprisingly smooth for quick breaks!