The external news, events, and tragedies do have an impact on the stock market. Hence, it is important for an intraday trader to keep a track of the Indian as well as global markets. Even the performance of global markets has an impact on the movement of Indian markets. Make your trade after the news or event has been announced, do not try to speculate the market based on the news.
There are even instances when traders do not have any sound trading strategy, they just make decisions based on gut feelings or emotions. One needs to remember that intraday trading in itself is a skill, it is not a gamble, it takes time to develop proficiency, you cannot expect rapid results. The above are some of the major reasons why intraday traders lose money, ensure that you are disciplined enough, stick to a proper strategy, analyze your strategy at regular intervals, and things will fall in place.