[{"_id":ObjectId("620eb60406b710c3ba2250f1"),"icon":"fas fa-bullhorn","title":"Test Post","scope":true,"postedby":"System","postbody":"Testing only content","postcolour":"orange","posteddate":"17/02/2022","posthideuser":["6205612355b2676a978b172b","6203e917055a3558ffeb9fca"],"__v":0},{"_id":ObjectId("620eb60406b710c3ba2250f2"),"icon":"fas fa-bullhorn","title":"Test Post","scope":true,"postedby":"System","postbody":"Testing only content","postcolour":"orange","posteddate":"17/02/2022","posthideuser":["test1","test2"],"__v":0}]

db.collection.find({posthideuser:{$nin:["test2"]}})