Good morning ☀️ Could you advise what kind of coat/raincoat to buy for…

Good morning ☀️ Could you advise what kind of coat/raincoat to buy for a winter outing (mid-November) and then take it through the winter? And what undergarment would go with it? If there are photos, I'd be very grateful ? My sister said she will send many coats for autumn, so if it's not too cold, there is a choice of what to wear, so I'm looking for a real winter, warm one.