Get url from file uploaded in Media Library

If understand your question correctly, I think this can get the job done. Use get_attachment_link instead of wp_get_attachment_url and then echo the title.

<?php 
 $attachment_id = 2582;
 $attachment_page = get_attachment_link( $attachment_id ); 
?>
<a href="https://wordpress.stackexchange.com/questions/255020/<?php echo $attachment_page; ?>"><?php echo get_the_title($attachment_id ); ?></a>