I do use Volume for one signal, but volume alone never enough for me, where the close is in relationship of the bar and has to be beyond the Bollinger Bands.
Trading is about relationships, mixing chart patterns, Bollinger Bands and SMA's do fine. Support and Resistance with trend or against. Going against what most people use as trends is my style. Enjoy price dropping and enter long.
Longer one studies, trades, years goes by, game becomes easier, but best to learn when not to take trades cause of chart patterns.