Firebase Retrieving Data in Swift

Question

I\'m trying to retrieve specific data from just the currently logged in user. My data in my database looks like this:

Answer 1

It retrieves logged in user data:

let ref = FIRDatabase.database().reference(fromURL: "DATABASE_URl")
let userID = FIRAuth.auth()?.currentUser?.uid
let usersRef = ref.child("users").child(userID!).observeSingleEvent(of: .value, with: { (snapshot) in
print(snapshot)