I am trying to make Nested commands in my command_handler.js discord.js

I am trying to create Nested commands in discord.js to make my bot read subfolders in my command folder (discord.js) Everything is basically in the title

command_handler.js:

const fs = require('fs')
module.exports = (client, Discord) => {
  const command_files = fs.readdirSync('./commands/').filter(file => file.endsWith('.js'))

  for (const file of command_files) {
    const command = require(`../commands/${file}`);
    if (command.name) {
      client.commands.set(command.name, command);
    } else {
      continue;
    }
  }
}

Most of Index.js:

const Discord = require('discord.js');

const client = new Discord.Client({ partials: ["MESSAGE", "CHANNEL", "REACTION" ]});

const token = process.env['DISCORD_TOKEN']

const fs = require('fs');

client.commands = new Discord.Collection();
client.events = new Discord.Collection();

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

// Command Handler
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.login token
client.login(token)

Thanks in advance