Freezing or keeping fresh for a short time is ok, but it doesn't taste good even if it doesn't deteriorate for a long time. I suggest you don't buy so much at once next time. Shopping is so convenient now, just eat and buy now. Of course, it is also possible that this opportunity is rare.

Then I suggest you look at the recipe and learn a variety of ways to eat various sausages, so that you can eat them in another way. Although the main ingredient is sausage, you can eat several flavors of sausage at a time.