Count Post and Page Views based on meta_value Using Shortcode in Dashboard Widget

I'm working on a counter that, each time a post is viewed, the meta value is updated by 1. This works fine, but I cannot seem to figure out how to make it count posts and pages, including the home page (is_front_page).

This is the code:

function counter_posts( $post_id ) {

  if ( is_user_logged_in()  current_user_can( 'administrator' ) ) return;

    $count_key = 'count_views';
    $count = get_post_meta( $post_id, $count_key, true );
    if ( $count == '' ) {

        $count = 0;

        delete_post_meta( $post_id, $count_key );

        add_post_meta( $post_id, $count_key, '1' );

      } else {

        $count++;

        update_post_meta($post_id, $count_key, $count);
    }
}

add_action( 'wp_head', 'track_posts' );
function track_posts( $post_id ) {

    // I don't know how to incorporate the counter for all post and pages, not just single posts
    // not using the line below does not work
    // if ( ! is_single() ) return;

    if ( empty( $post_id ) ) {

    global $post;

    $post_id = $post-ID;
}
  counter_posts($post_id);
}

add_shortcode( 'count_functions', 'display_counter' );
function display_counter( $atts ) {

    extract( shortcode_atts( array(

      'num' = 10,
      'cat' = '',
      ), $atts ) );
      $temps = explode( ',', $cat );
      $array = array();
      
        foreach ( $temps as $temp ) $array[] = trim( $temp );
        $cats = ! empty( $cat ) ? $array : '';

      ?

      ol

      ?php $popular = new WP_Query( array( 'posts_per_page' = $num, 'meta_key' = 'count_views', 'orderby' = 'meta_value_num', 'order' = 'DESC', 'category__in' = $cats ) );


        while ( $popular-have_posts() ) : $popular-the_post(); ?

        lia href=?php the_permalink(); ??php the_title(); ?/a

        ?php $total_views = get_post_meta( get_the_ID(), 'count_views',true );

        if ( $total_views == '' || $total_views == 0) {

          echo (no views yet);
        }

        elseif ( $total_views == 1 ) {

          echo (viewed once);
          } else {

        echo (viewed $total_views times); } ?/li

        ?php endwhile; wp_reset_postdata(); ?

        /ol
    ?php
}

add_action( 'wp_dashboard_setup', 'count_dashboard_widget' );
function count_dashboard_widget() {

    global $wp_meta_boxes;

    wp_add_dashboard_widget( 'count_views_widget', 'Most Read', 'count_functions_widget'); }

    function count_functions_widget() {

        echo 'br';

          echo do_shortcode('[count_views]');

        echo 'br';
}

I tried editing this if ( ! is_single() ) return; into this if ( is_single() || is_singular('page') ) return;, but that did not work. I also tried to remove it, which did not work either.

Any suggestions please?