WooCommerce custom place order validation

I need to perform additional checks when a user submits an order in WooCommerce. I tried using different add_filter methods, but I couldn’t hook into a place_order filter. Can someone help me with this?

Here is the code I’m using to achieve this:

add_action('woocommerce_after_checkout_validation', 'rei_after_checkout_validation');

function rei_after_checkout_validation( $posted ) {

    // do all your logics here...
    // adding wc_add_notice with a second parameter of "error" will stop the form...
    // wc_add_notice( __( "OMG! You're not human!", 'woocommerce' ), 'error' );

    if (empty($_POST['captcha'])) {
         wc_add_notice( __( "Captcha is empty!", 'woocommerce' ), 'error' );
    }

}

This code uses the woocommerce_after_checkout_validation action to run additional checks after the checkout validation process. If the captcha field is empty, it adds an error notice and prevents the form from submitting.