How to delete comment which a deeply nested array of objects - node.js

Question

I am new to MongoDB. This is a MERN project. I am using the MongoDB database. I am trying to delete the comments using id which are nested in an array of objects. My document looks like this,
{
"_id": "60aa8ed98ad79d380cb250b4",
"course_id": "609a2cedd07ba73200ada318",
"instructor_id": "609a2875aeefe40a6c9befc5",
"title": "New Annoucement",
"description": "new announcement is posted",
"video_url": "youtube.com",
"comments": [
{
"comments": [
{
"comments": [
{
"comments": [
{
"comments": [],
"_id": "60aa912b301ccc397057ded6",
"username": "Sandy",
"user_id": "609a2875aeefe40a6c9befc5",
"content": "1",
"parentId": "60aa9123301ccc397057ded5",
"type": "reply",
"annoucementId": "60aa8ed98ad79d380cb250b4"
}
],
"_id": "60aa9123301ccc397057ded5",
"username": "Sandy",
"user_id": "609a2875aeefe40a6c9befc5",
"content": "why its not deleting",
"parentId": "60aa8f648ad79d380cb250b6",
"type": "reply",
"annoucementId": "60aa8ed98ad79d380cb250b4"
}
],
"_id": "60aa8f648ad79d380cb250b6",
"username": "Sandy",
"user_id": "609a2875aeefe40a6c9befc5",
"content": "two",
"parentId": "60aa8edd8ad79d380cb250b5",
"type": "reply",
"annoucementId": "60aa8ed98ad79d380cb250b4"
}
],
"_id": "60aa8edd8ad79d380cb250b5",
"username": "Sandy",
"user_id": "609a2875aeefe40a6c9befc5",
"content": "one",
"type": "comment",
"annoucementId": "60aa8ed98ad79d380cb250b4"
}
],
"createdAt": "2021-05-23T17:20:25.579Z",
"updatedAt": "2021-05-23T17:30:19.116Z",
"__v": 6
}
this is a big object called announcements which has a comments array and that contains an array of objects which are comments. And if someone replies to a comment I am making another array called comments and storing all the replies objects.
I want to delete the object using ._id: 60aa912b301ccc397057ded6, which is the reply object with the content "1".
I have tried to find, findById, findOneAndRemove, findOneAndDelete it's not finding the document.

Answer 1

You could perhaps change the way you structure the comments and not nest them? Since each comment already has a unique id, nesting them only makes it more difficult to access the comment object, and it's a rabbit's hole, where the nesting might never end?
I propose you add an property in the comment object A to point to other comment object B, if A is a reply or quote of B.
That way you can have an array of comment objects and modify them must easily.
Cheers.