in my town i had searched for all shops ,none of them have black or red candles ..Few red candles are there but they dont come often ..so in this case ,how do I perform standard destruction ritual?
You can use any kind of candle. You can use a small fire if you are in a location where you can safely have a fire. Or you don't need to have anything.
It is not mandatory to have candles during the ritual.
Alternatively, you can check the Internet for candles in the color of your choice. If you have difficulty finding a black/red candle, you can use a candle in another color.