Yep. Stay off the brakes, use the lowest gear you have available. Even most automatic transmissions let you select “L” for these situations.

When I drive my manual in icy conditions, I generally stay a gear lower than I normally would as a rule. Much easier to recover.

On my newer PHEV vehicle, there’s an icy driving mode and an L option (even though it’s a CVT, it can mimic a high-torque low gear).