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$lang_code = \Drupal::service('language_manager')->getCurrentLanguage()->getId();
$node = \Drupal::routeMatch()->getParameter('node');

// Paragraphs/referencedEntities
$paras = $node->get('field_paragraphes')->referencedEntities();
foreach ($paras as $para) {
  // Remember to check if translation exists
  if ($para->hasTranslation($lang_code)) {
    $para = $para->getTranslation($lang_code);
  }
   $goodValue = $para->get('field_test_in_para')->getValue();
}