if($totalPage > 1){
    $customPagHTML = paginate_links(
        array(
          'base' => add_query_arg( 'cp', '%#%' ),
          'format' => '',
          'prev_text' => __('Back', '«'),
          'next_text' => __('Next', '»'),
          'total' => $totalPage,
          'current' => $page,
          'type' => ''
        )
    );
}
echo $customPagHTML;

$query = "SELECT * FROM custom_table WHERE custom_table.id = '$id'";