Disable payment method for specific country in WooCommerce

// =========================================================================
// DISABLE COD PAYMENT METHOD FOR SPECIFIC COUNTRY - DE
// =========================================================================
add_filter( 'woocommerce_available_payment_gateways', 'payment_gateway_disable_country_de' );
  
function payment_gateway_disable_country_de( $available_gateways ) {
    if ( is_admin() ) return;
    if ( isset( $available_gateways['authorize'] ) && WC()->customer->get_billing_country() <> 'DE' ) {
        unset( $available_gateways['authorize'] );
    } else {
        if ( isset( $available_gateways['cod'] ) && WC()->customer->get_billing_country() == 'DE' ) {
            unset( $available_gateways['cod'] );
        }
    }
    return $available_gateways;
}