filtering document in mongoose based on id and one specific property

just stuck on how to filter the below document on the basis of user_id and popupsArray.isSeen = true.

enter image description here

I want to get the popups from popupsArray whose isSeen = FALSE

You can simply use the $filter in aggregation

db.collection.aggregate([
  {
    $set: {
      popupsArray: {
        "$filter": {
          "input": "$popupsArray",
          "cond": {
            $eq: [
              "$$this.isSeen",
              false
            ]
          }
        }
      }
    }
  }
])

Working Mongo playground