Were you braking when this happened? Does the trailer have brakes?
I ask these questions because if the answers to them are “yes” and “no” respectively, that may have been the cause of the wreck. I guess this could happen even if the trailer has brakes, but trailer brakes could help. If the trailer has brakes, they might need adjusted or the trailer might benefit from use of winter tires or tire chains.
There are two types of trailer brake systems. One is referred to as “surge brakes.” With these, the brakes are applied when there is forward pressure on the trailer’s tongue. The other system, which I recommend, has electric brakes that are applied by a brake control unit installed inside the truck. These trailer brakes only assist with stopping the trailer, with the truck doing most of the stopping, but the brake control unit can be easily adjusted based on the conditions. If your trailer doesn’t have brakes, you might consider getting one that does.