How To Get all Customers Data in Magento 2.x

namespace Mage2db/AllCustomers/Block;

use Magento\Backend\App\Action;


class AllCustomers extends Action
{

    protected $customerCollection;

    public function __construct(
        \Magento\Customer\Model\ResourceModel\Customer\CollectionFactory $customerCollection
    )
    {
        $this->customerCollection = $customerCollection;
    }

    public function getAllCustomers()
    {
            return $this->customerCollection->create();


    }
}

$allCustomersdata = $this->getAllCustomers();
foreach ($allCustomersdata as $customer) {
    echo $customer->getEmail();
    echo $customer->getFirstname();
    echo $customer->getLastname();
}