Custom page twig template not working

Managed for fix my issue by adding the following to my .theme file:

 use Drupal\node\NodeInterface;

/**
 * Implements hook_theme_suggestions_page_alter().
 */
function mytheme_theme_suggestions_page_alter(array &$suggestions, array $variables) {
  // Try accessing node directly from the route
  $node_from_route = \Drupal::routeMatch()->getParameter('node');
  if ($node_from_route instanceof NodeInterface) {
    \Drupal::logger('csbb')->notice('Node found from route match: @type', [
      '@type' => $node_from_route->getType(),
    ]);

    $suggestions[] = 'page__node__' . $node_from_route->getType();
  }
}