Those links are called Attachment pages, and WordPress creates one for each media attachment in a post. There are a few plugins to disable them. To redirect the user to the actual post, one can add the following line of code:
// in wp-content/themes/[your-child-theme]/image.php
<?php wp_redirect(get_permalink($post->post_parent)) ; ?>
Link: https://www.greengeeks.ca/tutorials/article/set-wordpress-to-disable-attachment-pages-for-media/