Magento 2 return configurable product id instead of simple product id

I just start in Magento 2 and I came across problem. When I select a simple product, that belong to a configurable product, my code returns the product id from the configurable product. I can print the childs of this configurable product but I need to have exactly the product id of the product page that I am visiting.

<?php
    $product = $block->getProduct();
    $productId = $block->getProduct()->getId();
    $ProductName = $block->getProduct()->getName();
?>

<?php if ($product->getTypeId() === 'simple'):?>
        <div class="product-count">
           <?= $productId ?>
        </div>
    <?php else:?>

        <div class="product-count">
           <?= $productId ?>
        </div>

<?php endif?>

The second is the configurable product and I need the product selected.
Thanks.