I converted my html website into node js, but my js files are not working correctly. They are running, but there are some errors in them

MY Node js is working correctly (phenomit.com This is my design website its in HTML)

My errors are:

Uncaught TypeError: Cannot read properties of undefined (reading 'each')at waypoints.min.js:7:9157

at waypoints.min.js:7:9567jquery.counterup.min.js:8 Uncaught ReferenceError: jQuery is not defined

at jquery.counterup.min.js:8:910jquery.magnific-popup.min.js:4 Uncaught TypeError: a is not a function

at jquery.magnific-popup.min.js:4:374 at jquery.magnific-popup.min.js:4:73

at jquery.magnific-popup.min.js:4:147custom.js:4 Uncaught ReferenceError: jQuery is not defined at custom.js:4:24

I have shared the code in my git

https://github.com/GoD-ATHEN/Phentom

const express = require('express');
    const app = express();
    const mysql = require('mysql');
    const router = express.Router();
    const path = require('path');
    const ifl = path.join(__dirname, '/views/assets/')
    
    app.set('view engine', 'ejs');
    app.use('/assets',express.static(ifl));
    
    //CONNECTION CONFIGURATION
    var con = mysql.createConnection({
        host: "localhost",
        user: "root",
        password: "",
        database: "phentom"
       });
    
    app.get("/contact", (req, res)=>{
        res.render("contact");
    });
    
    app.get('/askquestion', (req, res) =>{
        con.query(`INSERT INTO contactq (name, email, subject, massage) VALUES ('${req.query.name}', '${req.query.email}', '${req.query.subject}', '${req.query.message}')`, function (err, result, fields) {
          if (err) throw err;
          res.redirect('https://phenomit.com/');
        });
    });
    
    app.listen(3000);