Validation in Fast Excel package Laravel - laravel

Question

ImportController
<?php
namespace App\Http\Controllers;
use App\Models\User;
use App\Talent\ImportData\Requests\ImportDataRequest;
use Illuminate\Support\Facades\Hash;
use Rap2hpoutre\FastExcel\FastExcel;
class ImportController extends Controller
{
public function __construct(private User $user)
{
}
public function import(ImportDataRequest $request)
{
$validated = $request->validated();
$collection = (new FastExcel)->import($validated['file'], function ($rows) {
$user = $this->user->create([
'name' => $rows['First Name'] . " " . $rows['Last Name'],
'email' => $rows['Email'],
'password' => Hash::make('Introcept#123'),
'role' => $rows['Role']
]);
$employee = $user->employees()->create([
'status' => $rows['Status'],
'first_name' => $rows['First Name'],
'last_name' => $rows['Last Name'],
'email' => $rows['Email'],
'contact_number' => $rows['Contact Number'],
'date_of_birth' => $rows['Date of Birth'],
'current_address' => $rows['Current Address'],
'pan_number' => $rows['Pan Number'],
'bank_account_number' => $rows['Bank Account Number'],
]);
$education = $employee->education()->create([
'education_level' => $rows['Education Level'],
'passed_year' => $rows['Passed Year'],
'institution' => $rows['Institution'],
]);
$employment = $employee->employment()->create([
'organization' => $rows['Organization'],
'join_date' => $rows['Join Date'],
'current_position' => $rows['Current Position'],
'work_schedule' => $rows['Work Schedule'],
'team' => $rows['Team'],
'manager' => $rows['Manager'],
'superpowers' => $rows['Superpower'],
]);
$employment->manages()->create([
'employee_id' => $rows['Manages'],
]);
});
}
}
ImportData Request
<?php
namespace App\Talent\ImportData\Requests;
use Illuminate\Foundation\Http\FormRequest;
class ImportDataRequest extends FormRequest
{
/**
* Determine if the user is authorized to make this request.
*
* #return bool
*/
public function authorize()
{
return true;
}
/**
* Get the validation rules that apply to the request.
*
* #return array<string, mixed>
*/
public function rules()
{
return [
'file'=>'required|mimes:csv,xlsx'
];
}
}
I am creating an API where the admin can import data from an excel file. Here, I am using the Fast Excel package in order to import data. Everything is working fine, but I have no idea how I can validate excel data before saving it into the database. I am pretty new to Laravel and any help will be really appreciated. Thank you