How to select the current date on PickerDate view when user just enter the page

my home page looking like this

    @State private var selectedDate: Date = Date()
    @State private var showDayView: Bool = false
    @State private var offsetY: CGFloat = -40
    @State private var searchText: String = ""
    
    var body: some View {
        NavigationStack{
            ZStack(alignment: .top) {
                VStack {
                    HStack {
                        Text("August")
                            .font(customFont(20, "-Medium"))
                        
                        Spacer()
                        NavigationLink {
                            Text("Calendar")
                        } label: {
                            Image("Calendar")
                        }
                        
                    }
                    .padding([.horizontal, .top])
                    
                    .background(Color.accentColor)
                    
                    PickerDate(selectedDate: $selectedDate) {
                        self.singlePickedDate(date: $0)
                    }
                    
                    Spacer()
                }
                
                DayView(selectedDate: $selectedDate)
                    .transition(.move(edge: .bottom)) 
                    .offset(y: offsetY)
            }

    func singlePickedDate(date: Date) {
        selectedDate = date
        withAnimation {
            showDayView = true
        }
    }

and My PickerDate looks like this to call the PickeDate View

struct PickerDate: View{
    
    @Binding var selectedDate: Date
    var onDateSelected: (Date) -> Void
    
    let daysOfWeek: [String] = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
    
    
    var body: some View{
        HStack{
            ForEach(0..<7){ index in
                let day = Calendar.current.date(byAdding: .day, value: index, to: startOfWeek())!
                VStack{
                    Text(daysOfWeek[Calendar.current.component(.weekday, from: day) - 1])
                        .font(customFont(15,"-Medium"))
                        .padding(.top,15)
                        .fontWeight(selectedDate == day ? .bold : .regular)
                    
                    Text(day, format: .dateTime.day())
                        .font(customFont(15,"-Medium"))
                        .fontWeight(selectedDate == day ? .bold : .regular)                        .frame(width: 30, height: 30)
                        .background(selectedDate == day ? Color.white : Color.clear)         .clipShape(Circle())
                        .foregroundColor(.black)
                        .padding(.bottom, 8)
                }
                .padding(.horizontal, 8)
                .background(selectedDate == day ? Color.deepAccent : Color.accentColor)
                .clipShape(Capsule())
                .onTapGesture {
                    onDateSelected(day)
                }
            }
        }
        .background(Color.accentColor)
        .frame(maxWidth: .infinity)
        .padding(.vertical, 10)
    }
    
    func startOfWeek() -> Date {
        let calendar = Calendar.current
        let today = Date()
        let components = calendar.dateComponents([.yearForWeekOfYear, .weekOfYear], from: today)
        return calendar.date(from: components) ?? today
    }
    
}

I’m wondering why my onAppear doesn’t works here?
Is that because when I passed selectedDate to the pickerDate view, the current date is not current any more?

but I tried to add a onAppear at PickerDate view too, it also doesn’t work