Why I am able to register user info to firebase in SwiftUI App?

I have register screen and I am not able to register info to firebase, I put user info on simulator, but it just hold on on screen, and no any change on firebase, any idea? where I missed?

import SwiftUI
import Firebase

struct Register: View {
  @State var name = ""
  @State var about = ""
   
  @Binding var show : Bool

  var body: some View {
   VStack(alignment: .center, spacing: 3){
          
              TextField("Name",text:self.$name)
                .padding()
         
             
              TextField(" about", text: self.$about)
                .padding()
           

   if self.loading{
                    
                    HStack{
                      
                      Spacer()
                      
                      Indicator()
                      
                      Spacer()
                    }
                  }
                    
                  else{
               
                Button {
                   
                  if self.name != "" && self.about != "" {
                              
                    self.loading.toggle()
                    CreateUser(name: self.name, about: self.about) { (status) in
                                
                        if status{
                                  
                          self.show.toggle()
                           
                          }
                        }
                      }
                    else{
                              
                    self.alert.toggle()
                       
                    }
                } label: {
                  Text("Next")
                    .padding()
  
                }
              }
}
import Foundation
import Firebase


func CreateUser(name: String,about : String, completion : @escaping (Bool)-> Void){
   
  let db = Firestore.firestore()
   
  let storage = Storage.storage().reference()
   
  let uid = Auth.auth().currentUser?.uid
   
       
      db.collection("users").document(uid!).setData(["name":name,"about":about, "uid":uid!]) { (err) in
         
        if err != nil{
           
          print((err?.localizedDescription)!)
          return
        }
         
        completion(true)
         
        UserDefaults.standard.set(true, forKey: "status")
         
        UserDefaults.standard.set(name, forKey: "UserName")
         
        NotificationCenter.default.post(name: NSNotification.Name("statusChange"), object: nil)
      }
    }
   
Why I am able to register user info to firebase in SwiftUI App?
 
 
Q