u/xeiiiiiiiii

The water spots on my car are not super old, a few months max. On my matte black grille the water spots are pretty bad cause when it rains or anything they of course hit the front of my car first. How should I go about removing them from my windows and black plastic shiny parts? I’ve heard of chemical guys and Adam’s polishes water spot remover but does anyone know of any better ones to use? I also wanted to ask how to prevent water spots? Should I just rinse my car with deionized water whenever it rains or if my car gets wet during the rainy season?