This method provides a "family" of languages (all English variants) but not, for example, Arabic or Chinese out of the box. For true multi-language with non-Latin scripts, use Method 2.
A standard Windows 11 ISO file typically contains a single language (e.g., English-US, German, or Japanese). If you install this version, you are locked into that language unless you purchase an upgrade to Windows 11 Pro or Enterprise to download language packs. windows 11 iso multi language