Database
[{CreatedAt2:ISODate("2022-05-01")},{CreatedAt2:ISODate("2022-05-02")},{CreatedAt2:ISODate("2022-04-01")}]
Query
db.collection.aggregate([{"$match":{$expr:{$gte:["$CreatedAt2",{"$subtract":["$$NOW",86400000]}]}}}])