Update Magento 2 Customer Programmitically

Create a php file on you magento 2 root path and past this code. Now Type Localhost/your_file_name.php or domain/your_file_name.php. First we include app/bootstrap.php. now we can use magento 2 all functionality. Its inform to you, This is very unsecured and break the magento rules. use only if you must need this or Testing purpose.

<?php
use \Magento\Framework\App\Bootstrap;
include('../app/bootstrap.php');
$bootstrap = Bootstrap::create(BP, $_SERVER);
$objectManager = $bootstrap->getObjectManager();
 
$url = \Magento\Framework\App\ObjectManager::getInstance();
 
$storeManager = $url->get('\Magento\Store\Model\StoreManagerInterface');
 
$state = $objectManager->get('\Magento\Framework\App\State');
 
$state->setAreaCode('frontend');
 
// Customer Factory to Create Customer
 

 
$websiteId = $storeManager->getWebsite()->getWebsiteId();
 
$store = $storeManager->getStore();  // Get Store ID
 
$storeId = $store->getStoreId();
 
// Instantiate object (this is the most important part)
$customerFactory = $objectManager->get('\Magento\Customer\Model\CustomerFactory'); 
$customer = $customerFactory->create();
 
$customer->setWebsiteId($websiteId);
$customer->loadByEmail('1229cse00241@gmail.com');
if ($customer->getId()) {
	$customerId=$customer->getId();
    $customer = $customer->load($customerId); 
   // set store as 
   echo $customer->getPassword();
   $customer->setEmail('1229cse00241@gmail.com');
   $customer->setFirstname('John');
   $customer->setLastname('Doe');
   $customer->setPassword('#Pass12345#');
    try {

        $customer->save();
        $customer->setConfirmation(null);
        $customer->save();
    } catch (Exception $ex) {
		echo 'wrong';
    }
}
exit;
$customer->setEmail("hello2@example.com");
 
$customer->setFirstname("John");
 
$customer->setLastname("Doe");
 
$customer->setPassword('152452652');
 
$customer->save();
 
echo 'Create customer successfully'.$customer->getId();