read by id mongodvb code example
Example 1: mongo console find by id
db.collection.find({_id:ObjectId('5e208c18d598b806c869ca37')}).pretty()
Example 2: mongo query new id
x = ObjectId()
db.collection.find({_id:ObjectId('5e208c18d598b806c869ca37')}).pretty()
x = ObjectId()