Today you can seen total sideways market in sideways market if market open gapup & showing rejection in 1st 15 min candle then you can plan to take downward movement.
Also u can see one small trendline act as support but market will come to breaks this trendline & grab liquidity for upside.
For Banknifty further upward moves then possible if market makes stoploss on upper sides & then going to breaks resistance.