Why did Nifty give up gains today, when closed lower low yesterd

Friends, we may feel that Nifty closed at a closing low and the previous day's low was also broken, then why did it happen today that the entire index reversed, is the technical wrong? If you put the Nifty chart in a smaller time frame i.e. 15 minutes and measure it with this train line, then you will understand that this reversal was absolutely perfect, hence if you are looking at any chart for technical reasons, then it is important to look at it in different time frames.