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How to get all coupon code which can apply on cart page in magento 2

$getRules = $objectManager->create('MagentoSalesRuleModelRule')->getCollection();

using the above code i get the all list of coupon codes. I want to display coupon code which can apply

I have created block to get cart items using checkout session file name is CustomSession.php

protected $_checkoutSession;

public function __construct (
 MagentoCheckoutModelSession $_checkoutSession
 ) 
 $this->_checkoutSession = $_checkoutSession;


public function getProducts()
 
 $item = $this->_checkoutSession->getQuote()->getAllVisibleItems();
 return $item;
 

than overriding the coupon.phtml file

 $objectManager = MagentoFrameworkAppObjectManager::getInstance();
 $objectManager->create('MagentoCatalogModelSession');
 $objectManager->create('MagentoCatalogModelSession');
 $CatalogSession = $objectManager->get('MagentoCatalogModelSession');
 $blockObj= $block->getLayout()->createBlock('VendorContactBlockCustomSession'); 
 $SalesRule = $objectManager->create('MagentoSalesRuleModelRule');
 $getRules = $SalesRule->getCollection();
 $item = $objectManager->create('MagentoCatalogModelProduct');

 $products = $blockObj->getProducts(); // this will also work using custom session block
foreach ($products as $product) 
 foreach ($getRules as $rule) 
$rules = $SalesRule->load($rule->getId());
$item->setProduct($product);
$validate = $rules->getActions()->validate($product);
 if ($validate == true) 

 echo "coupon -".$rule->getCode()."'>".$rule->getCode()." - ".$rule->getDescription()." coupon";
 echo "<br>";
 # code...
 else
 continue;