Wordpress change add-to-cart button in woocommerce

gistfile1.txt

function custom_woocommerce_product_add_to_cart_text() {
 global $product;
 
 $product_type = $product->product_type;
 
 switch ( $product_type ) {
 case 'external':
 return __( 'Buy product', 'woocommerce' );
 break;
 case 'grouped':
 return __( 'View products', 'woocommerce' );
 break;
 case 'simple':
 return __( 'Select Options', 'woocommerce' );
 break;
 case 'variable':
 return __( 'Select options', 'woocommerce' );
 break;
 default:
 return __( 'Read more', 'woocommerce' );
 }
 
}

add_filter( 'woocommerce_loop_add_to_cart_link', 'custom_add_product_link' );
function custom_add_product_link( $link ) {
 global $product;
 $product_id = $product->id;
 $product_sku = $product->get_sku();
 $link = '<a href="'.get_site_url().'/shop/?add-to-cart='.$product_id.'" rel="nofollow" data-product_id="'.$product_id.'" data-product_sku="'.$product_sku.'" data-quantity="1" class="button add_to_cart_button product_type_simple">'.custom_woocommerce_product_add_to_cart_text().'</a>';
 return $link;
}

// from https://surefirewebservices.com/change-add-cart-link-text-woocommerce-archive-page/