LiteroticaDatatableJS.user.js

// ==UserScript==
// @name        Literotica DatatableJS
// @namespace   botmtl
// @description literotica sort/filter tables
// @match       https://www.literotica.com/*
// @require     https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js
// @require     https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.16/js/jquery.dataTables.min.js
// @resource    customCSS https://cdnjs.cloudflare.com/ajax/libs/datatables/1.10.16/css/jquery.dataTables.css
// @grant       GM_addStyle
// @grant       GM_getResourceText
// ==/UserScript==

var newCSS = GM_getResourceText ("customCSS");
GM_addStyle (newCSS);

$(document).ready(function() {
    t=document.querySelectorAll("body > div:nth-child(8) > div > table")[0];
    t.insertAdjacentHTML('afterbegin', "<thead><tr><th>1</th><th>2</th><th>3</th><th>4</th></tr></thead>");
    $('colgroup').remove();
    $("body > div:nth-child(8) > div > table").DataTable({
      rowGroup: true
    });
});