Bot not responding to commands (discord.js v12) - node.js

Question

I've tried doing a test command using client.on which worked but everything else in my command handler does not work. Nothing is returned, is there something I am doing wrong?
Issue: My ping command does not do anything whatsoever.
Index.js file
require('dotenv').config();
const Discord = require('discord.js');
const { Client, Collection, Intents } = require('discord.js');
const config = require('./config.json');
const fs = require("fs");
const client = new Client({ disableMentions: 'everyone', partials: ['MESSAGE', 'CHANNEL', 'REACTION'], ws: { intents: Intents.ALL } });
const PREFIX = config.PREFIX;
client.commands = new Discord.Collection();
const commandFiles = fs
.readdirSync("./commands/")
.filter((file) => file.endsWith(".js"));
for (const file of commandFiles) {
const command = require(`./commands/${file}`);
client.commands.set(command.name, command);
}
client.commands = new Collection();
Ping file
let config = require('../config.json');
const Discord = require('discord.js');
const { MessageEmbed } = require('discord.js');
module.exports = {
name: 'ping',
category: 'Info',
description: 'Returns the bot\'s latency and API ping.',
aliases: ['latency'],
usage: 'ping',
userperms: [],
botperms: [],
run: async (client, message, args) => {
message.channel.send('🏓 Pinging....').then((msg) => {
const pEmbed = new MessageEmbed()
.setTitle('🏓 Pong!')
.setColor('BLUE')
.setDescription(
`Latency: ${Math.floor(
msg.createdTimestamp - message.createdTimestamp,
)}ms\nAPI Latency: ${client.ws.ping}ms`,
);
msg.edit(pEmbed);
});
},
};

Answer 1

You need to add event which will trigger every time a message is created and the bot can see it.
An example on version 12 would be (using message :
client.on('message', message => {
if (message.content.startsWith("!ping")) {
message.channel.send('Pong!');
}
});
In v13, message is deprecated so use messageCreate :
client.on('messageCreate', message => {
if (message.content.startsWith("!ping")) {
message.channel.send('Pong!');
}
});