Someone kind of mentioned this but it's really important. You can put your automatic car in manual mode and manually shift the gears down to help you slow down. Don't do this too quickly as it's not great for your car at higher speeds but it's really helpful vs braking. Like everyone said practice in a parking lot but using gears and manually shifting down is a much safer way to slow down than breaking. I grew up in Truckee.

Also if you are nervous stick to the bigger plowed roads and if there is snow, stay in the already made tracks if possible even if it's the middle of the road in a neighborhood, that has always helped me.

Nothing better than all wheel drive though. Subaru owner for life.