Create an Index.php that opens several .php files, without having to reload the page

Good afternoon, I want to create an index.php and that at the same time open several .php files but without having to reload the page

A friend gave me this .js that he uses to make said function

`    let style = ["betados", "administradores", "ranking", "pug_history", "demo_history"];
var pag = 0;
var pagin = 0;
function ActualizarPag() {
    $('#content_right').load('include/web/content_right_bans.php?i='+ pag + '&c=1&pagina=' + pagin);
    return false;
}
function PaginadorClick(val) {
    pagin = val;
    $('#content_right').load('includes/right_content.php?i='+ pag + '&c=1&pagina=' + val);
    return false;
}
function DisplayRightContent(val) {
    pag = val;
    $('#titulo').load('includes/right_content.php?i=' + val + '&c=0');
    $('#content_right').load('includes/right_content.php?i=' + val + '&c=1');
    $('#menu').load('includes/right_content.php?i='+ val +'&c=2');
    return false;
}
function DisplayMatchContent(match_id) {
    pag = 3;
    $('#titulo').load('includes/right_content.php?i=' + 3 + '&c=0&m=' + match_id);
    $('#content_right').load('includes/right_content.php?i=' + 3 + '&c=1&m=' + match_id);
    $('#menu').load('includes/right_content.php?i='+ 3 +'&c=2&m=' + match_id);
    return false;
}
$('#titulo').load('includes/right_content.php?i=0&c=0');
$('#content_right').load('includes/right_content.php?i=0&c=1');
$('#menu').load('includes/right_content.php?i=0&c=2');    `

The truth is that I have not tried it myself since I do not know how to start, the idea is that from a single .php file open several at the same time but without reloading the page

This is the index.php where I want to do everything

`    <?php
    $pag = 0;
    include "include/web/steam.php";
    include "include/web/conexion.php";
    include "include/geoip.inc";
    date_default_timezone_set("America/Caracas");
?>
<!DOCTYPE html>
<html lang="es">
<head>
    <meta charset="UTF-8" name="viewport" content="width=device-width, user-scalable=1">
    <title id="titulo">Baneados | Test</title>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script src="https://code.jquery.com/jquery-1.9.1.min.js"></script>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css">
    <link rel="stylesheet" href="css/default.css">
    <link rel="stylesheet" href="css/paginador.css">
    <link rel="stylesheet" href="css/betado_stats.css">
    <link rel="stylesheet" href="css/hover/hover.css" media="all">
    <link rel="stylesheet" href="css/icomoon/style.css">
    <link rel="icon" type="image/jpg" href="img/logo.png">
    <link rel="stylesheet" href="css/right_content/administradores.css">
    <link rel="stylesheet" href="css/right_content/betados.css">
    <link rel="stylesheet" href="css/right_content/demo_history.css">
    <link rel="stylesheet" href="css/right_content/pug_history.css">
    <link rel="stylesheet" href="css/right_content/ranking.css">
</head>
<body>
    <div id="style_right"></div>
    <div class="contenedor">
        <div class="animate__animated animate__backInDown">
            <div class="banner">
                <img src="img/banner3.png" alt>
            </div>
            <?php include "include/web/menu.php";?>
            <?php include "include/web/content_left.php";?>
            <?php include "include/web/content_right_bans.php";?>
        </div>
        <div class="footer">
            <p>
                Copyright © 2022 | 
                <a href="index.php">Test e-Sports</a>
            </p>
        </div>
    </div>
    <script src="js/right_content.js"></script>
    <script src="js/index.js"></script>
    <script src="js/right/betados.js"></script>
    <script src="js/right/administradores.js"></script>
    <script src="js/right/ranking.js"></script>
</body>
</html>    `

in this part

`    <?php include "include/web/menu.php";?>

<?php include "include/web/content_left.php";?>

<?php include "include/web/content_right_bans.php";?>    `

is where I want the functions to be performed.

I don’t know if it is allowed, if it is not, let me know to remove the link, on this page is what I am trying to recreate, in the menu section when you click and see another section, it shows the data without having to reload the page

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