Laravel seed millions of data for testing

DatabaseSeeder.php

<?php

public function run()
{
  $totalRecords = 50000; // Total number of records to generate
  $batchSize = 200; // Number of records to insert per batch

  DB::beginTransaction();
  Website::factory()->count($totalRecords)->create()->chunk($batchSize, function ($websites) {
      Website::insert($websites->toArray());
  });
  DB::commit();

  DB::beginTransaction();
  Theme::factory()->count($totalRecords)->create()->chunk($batchSize, function ($themes) {
      Theme::insert($themes->toArray());
  });
  DB::commit();

  DB::beginTransaction();
  Plugin::factory()->count($totalRecords)->create()->chunk($batchSize, function ($plugins) {
      Plugin::insert($plugins->toArray());
  });
  DB::commit();
?>