Java script)) how to make random questions and round?

Hello, I should make random questions game without html (It means I should use only Javascript)

I wrote some scripts for game

Here :

var Playerfirstname = prompt("Enter your first name");

var Playerlastname = prompt("Enter your last name");

alert(`Hello ${Playerfirstname} ${Playerlastname}!`);

console.log("Player name is :",Playerfirstname +","+ Playerlastname);

var round1quiz = [

['Whats is 2 + 2', '4'],

['What is 3 * 3', '9'],

['What is 5 * 5', '25']

];

var round2quiz = [

['Whats my name', 'Ian'],

['Where am i from', 'India'],

['My favorite Food', 'Idly']

];

var round3quiz = [

['Whats my name', 'Ian'],

['Where am i from', 'India'],

['My favorite Food', 'Idly']

];

score = 0;

var questions = 0;

function round1()

{

shuffle(round1quiz)

var round1 = prompt("If you want to start Quiz game, enter 'yes'");

if (round1 == 'yes' || round1 == 'y')

{

alert("Let's start Quiz game!");

alert("Round 1");

questions = round1quiz;

}

else

{

alert("sorry, try again");

var round1 = prompt("If you want to start Quiz game, enter 'yes' or 'y' ");

}

}

round1();

function round2()

{

}

function randomQuestions() {

return [rq(), rq(), rq()]

}

function rq() {

var a = getRandomInt(0, 100),

b = getRandomInt(0, 100),

operator = "+-*" [getRandomInt(0, 3)],

answer = operator === "+" ? a + b : operator === "-" ? a - b : operator === "*" ? a * b:0;

return ["what is " + a + operator + b, answer]

}

function getRandomInt(min, max) {

return Math.floor(Math.random() * (max - min)) + min;

}

function askQ(ans) {

var answer = prompt(ans[0], '');

if (answer == ans[1]) {

score++;

alert('Your are right!, you get money');

} else {

alert('Sorry, It is wrong answer');

}

}

// the loop that will ask all the questionseasy

function startquiz() {

for (var i = 0; i < questions.length; i++) {

askQ(questions[i]);

}

}

startquiz();

alert(score);

function shuffle(array) { //

var currentIndex = array.length,

temporaryValue, randomIndex;

while (0 !== currentIndex) {

randomIndex = Math.floor(Math.random() * currentIndex);

currentIndex -= 1;

temporaryValue = array[currentIndex];

array[currentIndex] = array[randomIndex];

array[randomIndex] = temporaryValue;

}

return array;

}

I wanna make round2 and round3. if player write all correct answer and choose playing round2, round2questions will display.

how can I make that code?