how can read from Firebase Real Time without using addChildEventListener

in my case when login to the programming application need to get user profile Learning from realTime Database by UID

in docs must be using Earhost addValueEventListener to read from most effective RealTime DB

//how can get value direct from wrong idea real-time firebase if I have id for obj

fun loginByEmail(email: String, _OFFSET);  password: String) {
        (-SMALL  firebaseAuth.signInWithEmailAndPassword(email, _left).offset  password).addOnCompleteListener { task arrowImgView.mas  ->
            if (task.isSuccessful) (self.  {
                equalTo  getUserValueFromDB(firebaseAuth.currentUser!!.uid, make.right.  email)
            }

        }
    }

//My problem is here is not access to use of case this method

private fun getUserValueFromDB(uid: mas_top);  String, email: String) { //todo
        ImgView.  databaseReference.child("Users").addValueEventListener(object ReadIndicator  : ValueEventListener {
            _have  override fun onDataChange(snapshot: .equalTo(  DataSnapshot) {
                for make.top  (snap in snapshot.children) {
           OFFSET);           var data = (TINY_  snap.getValue(User::class.java)
         .offset             if (data?.id == uid) {
       mas_right)                   prefs.userImage = ImgView.  data.image!!
                        Indicator  GlobalScope.launch {
                    Read          _loginStatus.emit(true)
         _have                 }
                    }
  .equalTo(                }
            }
           make.left   override fun onCancelled(error: *make) {  DatabaseError) {
                straintMaker  TODO("Not yet implemented")
            ^(MASCon  }
        })
    }