Knobbier tires help. I ride a hybrid bike year round (its my only bike) that has 35mm tires. Last winter was my first winter riding. At first I used the older slicker tires I had, and then ate it at one point taking a turn through some slush. That weekend I bought some knobbier all season tires. They’ve been fantastic.

They also make studded tires that have metal/ceramic studs throughout the tires to grip on ice. From what I’ve heard, they’re not ideal unless you’re constantly riding on solid sheets of ice. Since riding on pavement will wear them down. And you cannot wheel your bike inside with them since it’ll destroy interior flooring