next_post_link not showing if no next post

The question is not clear!
if there is no next post then there won’t be any thing to show.

maybe you can get some ideas here: https://www.transformationpowertools.com/wordpress/advanced-styling-of-the-prev-next-post-links

generally:

<?php if(get_adjacent_post(false, '', true)) {
/*the previous post link and its html*/
} else {
/*either nothing or some spaceholder if no previous post*/
} ; ?>

<?php if(get_adjacent_post(false, '', false)) {
/*the next post link and its html*/
} else {
/*either nothing or some spaceholder if no next post*/
} ; ?>

Thank you very much alchymyth, this is exactly what I was looking for!

My question may seemed unusual like nsathees pointed out, but you always manage to find a solution. You’re a WP God, really ??