Insulation, Radiant and Vapor Barriers - Torn vapor barrier

The back of my garage is connected to my kitchen. Our kitchen is very cold in the winter. I would like to find a way to improve the situation. I have started to remove the drywall and insulation from the garage side of the wall (from inside the garage) and things look quite messy. The vapor barrier on the kitchen side is torn in many places the insulation is thin and loose in other places. I am planning on replacing the insulation this weekend and redrywalling the walls. The only thing I am unsure about is how to repair the torn vapor barrier. Should I used faced insulation and place that side against the inside (kitchen) wall?

Thanks in advance

There is tape made for vapor barrier. Or use foam insulation, no vapor barrier required.

Would it be OK to buy a roly of poly and install it over the existing holes in the wall, holding in place with Tuck tape to seal the tears?

Another layer of poly would be fine. Staples are the standard means of holding it in place.