Unable to insert data in table using boot method

hello i m using laravel boot method (delete) for create logs. here is my code:-

EmployeeController.php

$delete = Employee::where('_id', $id)->delete();

Employee.php

self::deleted(function ($model) {
        $log['url'] = env('APP_URL') . 'edit-employee/' . $model['_id'];
        $log['status'] = 'remove';
        ActivityLog::add($log);
    });

via Chebli Mohamed