namespace MyTrackorderControllerIndex;

use MagentoFrameworkAppActionContext;

class Result extends MagentoFrameworkAppActionAction
{
    protected $resultFactory;
    protected $orderRepository;
    private $orderFactory;
    public function __construct(Context $context,
         MagentoSalesModelOrderFactory $orderFactory,
         MagentoFrameworkJsonHelperData $jsonHelper,
         MagentoSalesApiOrderRepositoryInterface $orderRepository,
        MagentoFrameworkViewResultPageFactory $resultFactory
        )
    {
        $this->jsonHelper = $jsonHelper;
        $this->resultFactory = $resultFactory;
         $this->orderRepository = $orderRepository;
        $this->orderFactory = $orderFactory;
        parent::__construct($context);
    }

    public function execute()
    {

        $order_id = $this->getRequest()->getParam('order_id');

        $order = $this->orderFactory->create();
        $order->loadByIncrementId($order_id);
$product = $order->getAllVisibleItems();

private $orderFactory;

public function __construct(
    ...
    MagentoSalesModelOrder $orderFactory,
    ...
) {
    ...
    $this->orderFactory = $orderFactory;
    ...
}

public function execute()
{

    $order_id = $this->getRequest()->getParam('order_id');
    $order = $this->orderFactory->loadByIncrementId($order_id);
    //$orderItems = $order->getAllItems();
    $orderItems = $order->getAllVisibleItems();

    foreach ($orderItems as $item) {
        // var_dump($item->getData());
    }
}