As someone who seriously tried pretty much all the mentioned tools to develop modern windows applications I feel this comment sums up everything perfectly. WPF

As someone who seriously tried pretty much all the mentioned tools to develop modern windows applications I feel this comment sums up everything perfectly. WPF is still the most usable solution. I really wanted to like UWP, then WinUI, but for anything that isn’t a simple demo project you end up spending all your time fighting the framework and facing broken/unpolished parts that make you feel pain and frustration. Avalonia isn’t perfect and has some rough edges but I would still consider it for cross platform support over anything else.