How to implement a redirect to a custom success page after submitting a form on a custom page (similar functionality like checkout)

I have a submit form and a controller, with the execute method. At the moment, after sending the form, my page reloads and on top of the page I get an alert that notifies the user about the success or failure of the operation, how can I instead redirect to a custom sucess page?

The execute method of my controller app/code/Vendor/Module/Controller/Order/Create.php:

    public function execute()
    {
        /** @var MagentoFrameworkControllerResultRedirect $resultRedirect */
        $resultRedirect = $this->resultRedirectFactory->create();
        $data = $this->getRequest()->getPostValue();
        $sampleIds = explode(',', $data['sample_ids']);
        if (count($sampleIds) >  $this->helper->getMaxCount()) {
            $this->messageManager->addError(__('The count of "samples" exceeds the limit'));
            $data = null;
        }

        if ($data) {
            /** @var VendorModuleModelOrder $model */
            $model = $this->_objectManager->create('VendorModuleModelOrder');
            $model->setData($data);
            $model->setStoreId($this->_storeManager->getStore()->getId());

            try {
                $this->objectRepository->save($model);
                $this->messageManager->addSuccess(__('Request was added to processing.'));
                $this->dataPersistor->clear('vendor_sample_order');

                // Send email
                $this->helper->sendEmail($model);

            } catch (MagentoFrameworkExceptionLocalizedException $e) {
                $this->messageManager->addError($e->getMessage());
            } catch (Exception $e) {
                $this->messageManager->addException($e, __('Something went wrong while saving the data.'));
            }
        }
        return $resultRedirect->setRefererOrBaseUrl();
    }