phtml

Magento 2 – How to identify current page in phtml file?

$currentFullAction = $block->getRequest()->getFullActionName();

$catpages= array('catalog_category_view','catalog_product_view');

if(in_array($currentFullAction, $catpages)){
    //Catalog page
}

you have to add this code to the block or to the page

 {{block class="Magento\Framework\View\Element\Template"  template="{Vendor}_{Module}::pages/example.phtml"}}

Example 

{{block class="Magento\Catalog\Block\Product\ListProduct" category_id="50" name="home.products.list.custom" template="Magento_Catalog::product/list.phtml"}}