Laravel Select Raw into Moloquent Query

Question

Previously, Im using Mysql for database. Once data keep growing, i'm tried to migrate to MongoDB. Im using jenssegers/laravel-mongodb just for analytics part. I found that it is difficult to fetch the data if i want to groupby per month, day, year and count it.

Mysql query

$query = Model::query()
  ->selectRaw('api_module, MONTH(created_at) as trans, Count(*) as counter'); 
  ->whereBetween('created_at', [$start, $end])
  ->whereNotNull('api_module')
  ->groupBy('trans', 'api_module')
  ->orderBy('api_module')
  ->get(['api_module', 'tran', 'counter']);

Data

{ 
    "_id" : ObjectId("5e61f67d31b9ad636154396f"), 
    "fingerprint" : "hy9mZ959ovg42898pncA1VPhbqr6gzdQNKDbSVBix8IajZ9yY", 
    "device_id" : 16, 
    "device_uuid" : "aaaab-123123", 
    "api_url" : "http://example.test:8000/api/news", 
    "api_id" : null, 
    "api_method" : "GET", 
    "ip_address" : "127.0.0.1", 
    "user_agent" : "PostmanRuntime/7.22.0", 
    "api_module" : "news", 
    "api_module_studly" : "News", 
    "origin" : 1, 
    "request_header" : "ABC", 
    "request_body" : "ABCD", 
    "created_at" : "2020-03-06 15:06:37", 
    "updated_at" : "2020-03-06 15:06:37"
}

I have no idea to convert it into aggregate json form if i want to use Model::raw(). It would be much appreciated if you could help to convert it from mysql to moloquent