View Count Only Shows On Frontpage, Not On Posts

Hello,

I’m very new at the coding in WordPress thing, so I don’t fully understand the language and lingo. However, with that being said I am trying to place a view count on my posts so the visitor sees how many times a video has been viewed.

Here is my issue.

When I place

function getPostViews($postID){
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
        return "0 View";
    }
    return $count.' Views';
}

function setPostViews($postID) {
    $count_key = 'post_views_count';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}

in functions.php via child theme. Then I paste

<?php setPostViews(get_the_ID()); ?>

in single.php,

and <?php echo getPostViews(get_the_ID()); ?>

in content.php,

I’ll get a return, but it’s only on the front end or the frontpage where the posts are. I don’t see a view count on the actual post. What am I doing wrong?

I’ve tried to paste the code in single-tmpl.php, content.php, etc. I’m so confused.

Thanks for your time.