Replacing main.js with index.js, Error: ENOENT?

I’m confused with why is this bot now functioning, I think it’s as I don’t have a “index.js” I use “main.js” How can I some how switch from “main.js” to “index.js”?

I’ll add all the main codes that may help you spot an error 😀

Here is the code in “main.js”:

const { Client, Collection, Intents } = require('discord.js');
const client = new Client({ disableMentions: 'everyone', partials: 
['MESSAGE', 'CHANNEL', 'REACTION'], ws: { intents: Intents.ALL } });


client.commands = new Collection();
client.aliases = new Collection();

['command', 'event'].forEach(handler => {
    require(`./handlers/${handler}`)(client);
});


client.login(process.env.BOT_TOKEN);

Error:

internal/fs/utils.js:269
    throw err;
    ^

Error: ENOENT: no such file or directory, open '/home/runner/DwaCraft-Ticket-bot/index.js'
    at Object.openSync (fs.js:462:3)
    at Object.readFileSync (fs.js:364:35)
    at Object.<anonymous> (/run_dir/interp.js:195:19)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
    at internal/main/run_main_module.js:17:47 {
  errno: -2,
  syscall: 'open',
  code: 'ENOENT',
  path: '/home/runner/DwaCraft-Ticket-bot/index.js'
}
repl process died unexpectedly: exit status 1
 

Package.json:

{
    "name": "ticket-bot",
    "version": "1.0.0",
    "description": "A simple ticket bot",
    "main": "main.js",
    "scripts": {
        "test": "echo "Error: no test specified" && exit 1",
        "start": "node main.js"
    },
    "author": "hamoodi",
    "license": "ISC",
    "dependencies": {
        "better": "^0.1.0",
        "cpu-stat": "^2.0.1",
        "discord.js": "^12.5.3",
        "dotenv": "^8.6.0",
        "express": "^4.17.1",
        "moment": "^2.29.1",
        "os": "^0.1.2",
        "sourcebin_js": "0.0.3-ignore"
    }
}