I find Windows to already be pretty solid in terms of bugs and performance, it's the UI and features where I find it sorely lacking and if Windows 11 is anything to go by, I am not hopeful for significant improvement.Windows will get better. MS actually does bug fixes and performace updates.
For example, every time I use the file explorer in Windows 10, I am disappointed with how it's missing really useful features, like automatically calculating folder sizes or quick look.