Do you put multiple users in the `users` table or create separate tables for each of them `customer` and`admin`

Personally I would implement roles and put all users in one place. If I wanted to extend their data I would go for users_customer_data table or so with customer details. You could join by user_id.

single table and assign roles and permissions

that

if you can login then you are a user of the application. Logging in is an Authentication topic.

It should not be confused with the role you will have on the site. This is the Authorisation topic.

Sometimes you need to collect information about a user that is different according to their role. This I would store in a profile table.

Just my way....

You could go like this:

class User extends Model
{
    public function customerDetails()
    {
        return $this->hasOne(CustomerDetails::class, 'user_id');
    }
}

class CustomerDetails extends Model
{
    protected $table = 'users_customer';
    protected $fillable = ['user_id', 'address', 'zip_code'];
}

$user = User::find(1);

//Of course you should handle these user types by yourself
if ($user->isCustomer()) {
    echo $customer->customerDetails->address;
}

Thank you all for your contribution. I think the decision is clear now :)