Avator Creator, null image issue

"I am developing a project called 'Avatar Creator.' In the HeadSelectionView, BodySelectionView, and LegSelectionView screens, the user will choose one of the images available there. In the final FinalSelectionView screen, I want to display the images the user selected, but I'm facing a problem. In the FinalSelectionView screen, only the last selected 'Leg' image is visible; the 'Head' and 'Body' images return 'nil' (null). I'm leaving the code I wrote below. Can you help?"

import SwiftUI

enum ImageHead: String, CaseIterable, Identifiable { case smile = "head-0" case smileWithEyebrow = "head-1" case happy = "head-2" case sad = "head-3" case verySad = "head-4" case shocked = "head-5"

var id: ImageHead { self }

}

enum ImageBody: String, CaseIterable, Identifiable { case black = "body-0" case brown = "body-1" case red = "body-2"

var id: ImageBody { self }

}

enum ImageLeg: String, CaseIterable, Identifiable { case blue = "leg-0" case grey = "leg-1" case black = "leg-2"

var id: ImageLeg { self }

}

struct SelectionImageView: View { var image: String

var body: some View {
    Image(image)
        .resizable()
        .aspectRatio(contentMode: .fit)
        .frame(width: 150, height: 150)
}

}

struct ContentView: View { @State private var userSelectedHead: ImageHead? @State private var userSelectedBody: ImageBody? @State private var userSelectedLeg: ImageLeg?

var body: some View {
    NavigationView {
        ScrollView(.horizontal) {
            LazyHGrid(rows: [GridItem(.flexible())]) {
                ForEach(ImageHead.allCases, id: \.self) { head in
                    NavigationLink(destination: BodySelectionView(userSelectedHead: $userSelectedHead, userSelectedBody: $userSelectedBody, userSelectedLeg: $userSelectedLeg)) {
                        VStack {
                            SelectionImageView(image: head.rawValue)
                            Text("Selected Head: \(userSelectedHead?.rawValue ?? "None")")
                        }
                    }
                    .padding()
                }
            }
        }
        .navigationTitle("Select Head")
    }
}

}

struct BodySelectionView: View { @Binding var userSelectedHead: ImageHead? @Binding var userSelectedBody: ImageBody? @Binding var userSelectedLeg: ImageLeg?

var body: some View {
    ScrollView(.horizontal) {
        LazyHGrid(rows: [GridItem(.flexible())]) {
            ForEach(ImageBody.allCases, id: \.self) { body in
                NavigationLink(destination: LegSelectionView(userSelectedHead: $userSelectedHead, userSelectedBody: $userSelectedBody, userSelectedLeg: $userSelectedLeg)) {
                    VStack {
                        SelectionImageView(image: body.rawValue)
                        Text("Selected Head: \(userSelectedHead?.rawValue ?? "None")")
                        Text("Selected Body: \(userSelectedBody?.rawValue ?? "None")")
                    }
                }
                .padding()
            }
        }
    }
    .navigationTitle("Select Body")
}

}

struct LegSelectionView: View { @Binding var userSelectedHead: ImageHead? @Binding var userSelectedBody: ImageBody? @Binding var userSelectedLeg: ImageLeg?

var body: some View {
    ScrollView(.horizontal) {
        LazyHGrid(rows: [GridItem(.flexible())]) {
            ForEach(ImageLeg.allCases, id: \.self) { leg in
                NavigationLink(destination: FinalSelectionView(userSelectedHead: $userSelectedHead, userSelectedBody: $userSelectedBody, userSelectedLeg: $userSelectedLeg, selectedLeg: leg)) {
                    VStack {
                        SelectionImageView(image: leg.rawValue)
                        Text("Selected Head: \(userSelectedHead?.rawValue ?? "None")")
                        Text("Selected Body: \(userSelectedBody?.rawValue ?? "None")")
                        Text("Selected Leg: \(leg.rawValue)")
                    }
                }
                .padding()
            }
        }
    }
    .navigationTitle("Select Leg")
}

}

struct FinalSelectionView: View { @Binding var userSelectedHead: ImageHead? @Binding var userSelectedBody: ImageBody? @Binding var userSelectedLeg: ImageLeg? var selectedLeg: ImageLeg

var body: some View {
    VStack {
      if let head = userSelectedHead {
        SelectionImageView(image: head.rawValue)
        Text("Selected Head: \(head.rawValue)")
      } else {
        Text("Default Head Image")
      }

      if let body = userSelectedBody {
        SelectionImageView(image: body.rawValue)
        Text("Selected Body: \(body.rawValue)")
      } else {
        Text("Default Body Image")
      }

      SelectionImageView(image: selectedLeg.rawValue)
      Text("Selected Leg: \(selectedLeg.rawValue)")

      Spacer()
    }
    .navigationTitle("Final Selection")
    .padding(.horizontal)
}

}

struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } }