[{"_id":"63385ece9801130700fb28e2","post":{"key":"dynamicone","value":[{"image":"image1.png"}],"commments":["Lorem ipsum"]},},{"_id":"61702dd8d7bc4106004627f2","post":{"key":"dynamictwo","value":[{"image":"image2.png"}],"commments":["Lorem ipsum"]},},{"_id":"61f05a9800b2210700fe3fa3","post":{"commments":["Lorem ipsum"]},},{"_id":"61701eb47c6bb50700e36c16","post":{"commments":["Lorem ipsum"]},},]

db.collection.find({"post.value":{$exists:true}})