A super-basic way to get plain text from a URL is:
struct ContentView: View {
    @State private var mytext = "loading..."
    func loadData() async {
        do {
            let url = URL(string: "https://thespia.com/test/")!
            mytext = try String(contentsOf: url)
        } catch {
            print("something went wrong") // TODO - report the actual error
        }
    }
    var body: some View {
        Text(mytext)
        .task {
            await loadData()
        }
    }
}