Dynamically Update Complex UI Views in SwiftUI

I am working on a SwiftUI project where I need to dynamically update the UI by adding or removing components based on some event. The challenge is handling complex UI structures efficiently while ensuring smooth animations and state management.

Example Scenario: I have a screen displaying a list of items. When a user taps an item, additional details (like a subview or expanded section) should appear dynamically. If the user taps again, the additional content should disappear. The UI should animate these changes smoothly without causing unnecessary re-renders.

My Current Approach:

I have tried using @State and if conditions to toggle views, like this:

struct ContentView: View {  
    @State private var showDetails = false  
    
    var body: some View {  
        VStack {  
            Button("Toggle Details") {  
                showDetails.toggle()  
            }  
            
            if showDetails {  
                Text("Additional Information")  
                    .transition(.slide) // Using animation  
            }  
        }  
        .animation(.easeInOut, value: showDetails)  
    }  
}

However, in complex UI scenarios where multiple components need to be shown/hidden dynamically, this approach is not maintainable and could cause performance issues. I need help with the below questions.

Questions:

• State Management: Should I use @State, @Binding, or @ObservedObject for handling dynamic UI updates efficiently?
• Best Practices: What are the best practices for structuring SwiftUI views to handle dynamic updates without excessive re-renders?
• Performance Optimization: How can I prevent unnecessary recomputations when updating only specific UI sections?
• Animations & Transitions: What is the best way to apply animations smoothly while toggling visibility of multiple components?
• Advanced Approaches: Are there better techniques using @EnvironmentObject, ViewBuilder, or even GeometryReader for dynamically adjusting UI layouts?

Any insights, code examples, or resources would be greatly appreciated.