Magento 2.4: Custom Block not return values to custom phtml file

I want to get my wishlist product list on my custom phtml file,

My block:

appcodevendormoduleBlockWishlistProducts.php

<?php
namespace VendorModuleBlock;
    
    use MagentoFrameworkViewElementTemplateContext;
    use MagentoCatalogModelResourceModelProductCollectionFactory;
    use MagentoWishlistModelResourceModelItemCollectionFactory as WishlistCollectionFactory;
    use MagentoCustomerModelSession;
    
    
    class WishlistProducts extends MagentoFrameworkViewElementTemplate
    {
        protected $_wishlistCollectionFactory;
        protected $_customerSession;
        protected $_productCollectionFactory;
    
        public function __construct(Context $context,
            CollectionFactory $productCollectionFactory,
            WishlistCollectionFactory $wishlistCollectionFactory,
            Session $customerSession
        ) {
            $this->_productCollectionFactory = $productCollectionFactory;
            $this->_wishlistCollectionFactory = $wishlistCollectionFactory;
            $this->_customerSession = $customerSessio;
        }
        
        public function getWishlistProductCollection()
        {
            $collection = [];
            if ($this->_customerSession->isLoggedIn()) {
                $wishlist = $this->_wishlistCollectionFactory->create()
                    ->addCustomerIdFilter($this->_customerSession->getCustomer()->getId());
    
                $productIds = null;
                foreach ($wishlist as $product) {
                    $productIds[] = $product->getProductId();
                }
                
                $collection = $this->_productCollectionFactory->create()->addIdFilter($productIds);
                $collection = $this->_addProductAttributesAndPrices($collection)->addStoreFilter($this->getStoreId());
            }
            return $collection;
        }
    }
    ?>

appcodevendormoduleviewfrontendwishlistitems.phtml

<?php
    echo("hello");
?>

The hello not return on my custom phtml file,

I am using to call:

<?php echo $this->getLayout()->createBlock("MagentoFrameworkViewElementTemplate")->setTemplate("vendor_module::wishlistitems.phtml")->toHtml(); ?>

It’s not return the values.