Winter tyres that are good on snow and do not harden

Until the WR season it’s still a few weeks, but I’m going to start with I’m looking for winter tires for a Dacia Lodgy, whose strength is particularly due to good snow characteristics. Dimension 185/65 R15 or alternatively 195/55 R16 (must buy new bikes anyway). Since we live in a middle mountain location, the performance on snow is especially important to me. However, the car is not driven much in winter, so the WR will become a few years old and should be their own aften on snow and wetness therefore keep as long as possible. GJR are not possible, because with the Lodgy in summer a lot is driven and I specialized in snow GJR wears out too quickly.