Maybe possible to use php sessions?

[kalenderfamily]

Found this:

<?php
session_set_cookie_params(10800);
session_start();
?>

<?php
$counterstand = intval(file_get_contents("counter.txt"));
 
if(!isset($_SESSION['counter_ip']))
   {
   $counterstand++;
   file_put_contents("counter.txt", $counterstand);
 
   $_SESSION['counter_ip'] = true;
   }
 
echo $counterstand;
?>

Source: https://www.php-einfach.de/experte/php-codebeispiele/besucherzaehler-mit-reload-sperre/

[kalenderfamily]

Really easy to integrate into theme by including session_set_cookie_params(10800); to index.php and

$counterstand = intval(file_get_contents(dirname(__FILE__).'/'.'counter.txt'));
 
if(!isset($_SESSION['counter_ip']))
   {
   $counterstand++;
   file_put_contents(dirname(__FILE__).'/'.'counter.txt', $counterstand);
 
   $_SESSION['counter_ip'] = true;
   }
// echo dirname(__FILE__).'/'.'counter.txt';

echo 'Total hits: '.$counterstand;

to the theme.

or just counter.txt then counter file will be in Pluck's root