Grab and display pods image alt

I using pods plugin to create new post types. However, I face some problem.

https://www.ads-software.com/plugins/pods/

I can’t use _wp_attachment_image_alt to get image alt as text. I try to search on google but it seem no answer after all.

foreach ( $productsInfo as $productInfo ) {
$img = pods_image( $productInfo);
$img_id = get_post_thumbnail_id($img->ID);
$alt_text = get_post_meta($img_id , ‘_wp_attachment_image_alt’, true);
echo ‘<p>’ . $alt_text . ‘</p>’;
}
Anyone know how to grab image alt as display text?