How to make a multiplayer phaser game

How do you make a mutiplayer game in phaser:


This is private :/:
This is all i have so far another bug with the player s that when you move the piont to mouse function get wonky :(>

(this is a top-down shooter game.)

    var mouse;

    //initialise global variables
    var player;
    var obstacles;
    var cursors;
    var yLimit;
    var xLimit;

class SceneTest extends Phaser.Scene {
    constructor() {
        super ({key:"SceneTest"});
    preload() {
        this.load.image('floor', 'assets/floor.png');
    create (){
        let background = this.add.image(0, 0, 'floor').setScale(6);
        background.x = background.displayWidth / 2;
        background.y = background.displayHeight / 2;
        xLimit = background.displayWidth; //the player cannot go beyond these x and
        yLimit = background.displayHeight; //y positions
        player = this.physics.add.sprite(0, 0, 'player'); //create the player sprite
        player.setScale(0.3); //make it appear smaller
        console.log("Player is spawned at"+ player.x,player.y)
        cursors = this.input.keyboard.createCursorKeys(); //creates an object containing hotkeys
        this.cameras.main.setBounds(0, 0, xLimit, yLimit);
        obstacles = this.physics.add.staticGroup(); //create group for obstacles
        obstacles.create(800, 600, 'obstacle');
        obstacles.create(950, 800, 'obstacle');
        this.physics.add.collider(player, obstacles); //collision detection between player and obstacles

        //for mouse position
        mouse = this.input;
    update (){
        //angle between mouse and player
        let angle = Phaser.Math.Angle.Between(player.x,player.y,mouse.x,mouse.y);
        //rotation player
        if (cursors.left.isDown && player.x >= 0) {
            player.VelocityX =- 200; //go left
        else if (cursors.right.isDown && player.x <= xLimit) {
            player.setVelocityX(200); //go right
        else {
            player.setVelocityX(0); //don't move left or right
        if (cursors.up.isDown && player.y >= 0) {
            player.setVelocityY(-200); //move up
        else if (cursors.down.isDown && player.y <= yLimit) {
            player.setVelocityY(200); //move down
        else {
            player.setVelocityY(0); //don't move up or down
        this.cameras.main.centerOn(player.x, player.y); //centre camera on current position of player


and yeah i have never used socket before soo uh… yeah… (i have VERY little expericne w/ socket)