Custom Navbar and segmented control swiftui

Question

I have some trouble with custom navbar. Before i use Segmented control it worked fine, but now with segmented control the color and font of the navbar doesn't update. I'm using Init() to customize both. Here my code:

    init(){
        UINavigationBar.appearance().isTranslucent = true
    UINavigationBar.appearance().titleTextAttributes = [.font : UIFont(name: "Gilbert", size: 50)!, .foregroundColor: UIColor(named: "testo")!]
            UINavigationBar.appearance().tintColor = UIColor(named: "color")
        
        UISegmentedControl.appearance().selectedSegmentTintColor = UIColor(named: "testo")
        
        UISegmentedControl.appearance().backgroundColor = .clear

            //this will change the font size
       
        UISegmentedControl.appearance().setTitleTextAttributes([.font : UIFont(name: "Gilbert", size: 30)!], for: .normal)

            //these lines change the text color for various states
            UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor : UIColor.white], for: .selected)
        UISegmentedControl.appearance().setTitleTextAttributes([.foregroundColor : UIColor(named: "testo")!], for: .normal)
        
         
    }