so i know that the way to make bot not respond to itself is put if (message.author.id === client.user.id) return; or maybe if(message.author.bot) return; but i dont know where should i put it. my code is something like:

const {Client, Intents} = require('discord.js'); 
const dotenv = require('dotenv')

dotenv.config();

const client = new Client(
    {
        intents:[
             Intents.FLAGS.GUILDS,
             Intents.FLAGS.GUILD_MESSAGES,
        ]
    }
);

client.on('ready', ()=>{
    console.log('bot working ngl')
})

//greetings
const random_greeting = () =>{
    return Math.floor(Math.random() * 6);
  }
  
  client.on('messageCreate', msg=>{
    let greeting = ['Hi', 'Yo', 'Ohayo', 'Hello', '👋👋', 'Ok...',]
    if (msg.content === 'hi', 'yo'){
      msg.reply(greeting[random_greeting()])
    }
  })

  client.on('message', message => {
    if (message.author.id === client.user.id) return;
  })
client.login(process.env.TOKEN)

as you see when someone say hi, the bot will greeting back by saying 1 of the 6 word in list, but the problem is whenever the bot replying someone with that list word is will keep going spam those word. what code that can stop it replying to itself, and where should i put it