how does laravel migration affects existing data from tables code example

Example 1: laravel migration rollback

To rollback one step:

php artisan migrate:rollback

To rollback multiple steps:

php artisan migrate:rollback --step=[x]
  
To drop all tables and reload all migrations:

php artisan migrate:fresh

Example 2: how to make-migrations in laravel

php artisan make:migration create_users_table --create=users

php artisan make:migration add_votes_to_users_table --table=users