Ah, bummer. Samsung puts very little effort into making their stuff work outside of their own devices and it sucks, lol.
If you have a Windows PC you should be able to open up the Terminal and type winget install "Samsung Notes" even if not on a Samsung computer.
winget install "Samsung Notes"
I’m currently using Keep because I really like the sticky note-like interface and it’s one of the only note apps on Wear OS.
Ah, bummer. Samsung puts very little effort into making their stuff work outside of their own devices and it sucks, lol.