Hide and display activity when click on service checkbox

PHP code

<?php 
//for service 1
$all_activities = "select * from activity join displayserviceactivitymap on activity.activity_id = displayserviceactivitymap.activity_id right  join services on services.service_id = displayserviceactivitymap.service_id";    

$all_activities = $conn->query($all_activities) or die ($conn>error.__LINE__);
$activities = [];

while ($row = $all_activities->fetch_assoc()) {
    $activities[] = $row;
}
$repeated = 'repeated';

foreach ($activities as $act) {
  if($act['servicename'] != $repeated){

    echo '<br><input type="checkbox" name="arr['.$act['service_id'].'][service]" value="'.$act['service_id'].'" id="'.$act['service_id'].'">'.$act['service_id'].$act['servicename'].'<br>';
    $repeated = $act['servicename'];
  }

  if($act['activity_id'] != '')

  echo '<input type="checkbox" name="arr['.$act['service_id'].'][activity][]" value="'.$act['activity_id'].'" id="'.$act['activity_id'].'">'.$act['nameofactivity'].'<br>';
}

?>

Output of This code is

• Incometax
  • Return
  • Filling
  • Billing
  • Tax Invoice
• GST
  • Compnay
  • Format
  • GSTR
• TDS
  • Return
  • ICRT
  • Accomplish

In this Output Incometax,GST,TDS are services. I want To display related activity when check service checkbox and hide activity when uncheck checkbox.

For example :-

When I click on Incometax service1 checkbox then activity related to service 1 return,filling,billing,tax invoice display.

When I click on GST service2 checkbox then activity related to service 2 display.

Same for all. Thank you.