javascript - Sort firebase data in descending order using negative timestamp

Question

above is a screenshot of my firebase database. i am trying to sort firebase data in descending order using negative timestamp. I 'm using the following command:

  const feedRef = database.ref('ducks')
  feedRef.orderByChild('timestamp').on('value', (snapshot, error) => {
    const feed = snapshot.val()})

i keep getting the feed in the same order as the database not in the descending order like i want.I think its not working because ducks endpoint doesnt have a child name timestamp how would i achieve this? Do the push generated keys have timestamp data ?

Answer 1

Waitting for answers