[{"Post":"this is a post","_id":ObjectId("630f3c32c1a580642a9ff4a0"),"slug":"this-is-a-title","title":"This is a title"},{"Post":"this is a post","_id":ObjectId("630f3c32c1a580642a9ff4a1"),"slug":"this-is-a-title-b","title":"This is a title B"}]

db.collection.find({slug:{$eq:"this-is-a-title"},})