jQuery fresh ALL rows from PHP loop
Solution 1:
You need to move the script out from the loop completely. Have ONE version of the script that delegates like this
$("#container").on("click", ".live-users-more",function () {
const item_id = $(this).prev().attr("id"); ....
and then change
<div id="live-users-more-<?=intval($row["item_id"])?>"></div>
to
<div class="live-users-more"></div>
where you have a
<div id="container"></div>
that wraps all the live user divs