You can't polish a turd but you can roll it in glitter.
A Pi is always going to be a Pi. Its always going to be a Linux thing (Debian IIRC).
If you want Windows, buy a PC.
If you want macOS, but a Mac.
But to me at least there's very little point indeed making the UI look sort of, maybe, like Windows or macOS if the UX is going to still be Linux.