Programatically delete content in Drupal 8

drupal8_programatically_delete_content.php

// Enable Devel module and go to /devel/php

$nodes = \Drupal::entityQuery("node")
  ->condition('created', strtotime('-30 days'), '<=')
  ->execute();

$storage_handler = \Drupal::entityTypeManager()->getStorage("node");
// $entities = $storage_handler->loadMultiple(); // Delete ALL nodes.
$entities = $storage_handler->loadMultiple($nodes);
$storage_handler->delete($entities);

// Delete Taxonomy Term by Vocabulary
$controller = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
$all_terms = \Drupal::entityQuery("taxonomy_term")->condition('vid', 'document_type')->execute();
foreach ($all_terms as $tid) {
   $term = $controller->load($tid);
   $controller->delete([$term]);
}
    
// Delete media
$medias = \Drupal::entityQuery("media")
  ->condition('created', strtotime('-30 days'), '<=')
  ->execute();

$storage_handler = \Drupal::entityTypeManager()->getStorage("media");
// $entities = $storage_handler->loadMultiple(); // Delete ALL medias.
$entities = $storage_handler->loadMultiple($medias);
$storage_handler->delete($entities);


// Delete files.
$medias = \Drupal::entityQuery("file")
  ->condition('created', strtotime('-30 days'), '<=')
  ->execute();

$storage_handler = \Drupal::entityTypeManager()->getStorage("file");
// $entities = $storage_handler->loadMultiple(); // Delete ALL files.
$entities = $storage_handler->loadMultiple($files);
$storage_handler->delete($entities);

  
// Delete all paragraphs by Type.
$paragraphs = \Drupal::entityTypeManager()
    ->getStorage('paragraph')
    ->loadByProperties(array('type' => 'paragraph_type')); // System name

foreach ($paragraphs as $paragraph) {
    $paragraph->delete();
}