Error creating a custom PageView in SwiftUI 2

Question

I am working on an app that requires 6 items in a PageView, xcode was acting up so i came on Stack Overflow and found pawello2222's way, found it really helpful but I still need to connect it to the horizontal links on top. here is the code, thanks a million.

Original solution: How can I implement PageView in SwiftUI?

Below is my code and what I want to achieve, swiping left or right works, but clicking on the links does not change the view

struct TestingView: View {
    @State var selection = 0

    var body: some View {
        VStack {
            HStack(spacing: 10) {
                VStack {
                    Text("Link 1")
                        .foregroundColor(self.selection == 0 ? Color.blue : Color("Silver").opacity(0.7))
                        .font(.caption)
                        .fontWeight(.bold)
                        .clipShape(Rectangle())
                        .onTapGesture {
                            withAnimation(.default) {
                                self.selection = 0
                            }
                        }
                }

                Spacer(minLength: 0)

                VStack {
                    Text("Link 2")
                        .foregroundColor(self.selection == 1 ? Color.blue : Color("Silver").opacity(0.7))
                        .font(.caption)
                        .fontWeight(.bold)
                        .clipShape(Rectangle())
                        .onTapGesture {
                            withAnimation(.default) {
                                self.selection = 1
                            }
                        }
                }

                Spacer(minLength: 0)

                VStack {
                    Text("Link 3")
                        .foregroundColor(self.selection == 2 ? Color.blue : Color("Silver").opacity(0.7))
                        .font(.caption)
                        .fontWeight(.bold)
                        .clipShape(Rectangle())
                        .onTapGesture {
                            withAnimation(.default) {
                                self.selection = 2
                            }
                        }
                }
            }

            PageView(selection: $selection, indexDisplayMode: .never, indexBackgroundDisplayMode: .never) {
                VStack {
                    FirstView()
                }
                .tag(0)

                VStack {
                    SecondView()
                }
                .tag(1)

                VStack {
                    ThirdView()
                }
                .tag(2)
            }
        }
    }
}