Nifty making lower lows and lower highs

After breaking the level 18000 nifty gave a staright uptrend of almost +700pts in 9-10days and made a all time High 18890( round figure) since then it started making a lower low and lower highs structure that shows a correction in nifty
After market opens nifty doesn't give much chances to option buyers / intraday traders or specific bull's to get a good trade it either gets sideways or falls