Let's add the French language.

• Create a new file fr.json in the fr folder in the resources/lang folder and copy the en.json file code in this file.
• You can simply use {{ __('t-title') }} in your page to translate.

• Add the below dropdown in the resources/views/layouts/topbar.blade.php file in the language dropdown.

  <!-- item-->
  <a href="{{ url('index/ar') }}" class="dropdown-item notify-item" data-lang="ar" title="French">
      <img src="https://img.themesbrand.com/judia/flags/fr.svg" alt="user-image"
          class="me-2 rounded" height="18">
      <span class="align-middle">French</span>
  </a>
  

• Add the below image case in resources/views/layouts/topbar.blade.php.

  <!-- item-->
  @case('fr')
      <img src="{{ URL::asset('build/images/flags/fr.svg') }}" class="rounded" alt="Header Language" height="20">
  @break