It is not that one cannot make money in intraday. A different mindset than always trend trading is required
intraday
1. in range with no bias should sell high and buy low with appropriate filters (I use 1min band for failure in sideways at key s/r)
2. if in trend then should trail and get maximum out of the move ..... I use +1SD and -1SD BO/BD to know that one of the bulls / bears has taken over
the important thing is to recognize potential ranges where both bulls / bears fight and trade as per range trading rules and to recognize when it switches to trend and switch to trend trading rules.....
One may get days when there is a trend one way.....some days are full range days.....or some even both way or 3 way trends.....agility to recognize this (no priort bias - easy to say diff to do) and then trade one's system with discipline is important
You do not realize how scary it can be.
Let me explain how dangerous it can be trading lower TF(anything < 15M).
Exchange all over the world including NSE uses FIFO for orders. So the first order that comes in the queue for a price point gets matched against the opposite side and gets filled. Now institutions try to get in order as quickly as they can(co location) so they can get filled. Even if you do get your order quickly , there are some institutions & firms that are also members of NSE have priority(they pay a high fee for this).
Now imagine a retail trader trading lower TF, trying to get a fill in and price is moving fast. You think you can beat the institutions to get your orders filled. I can't even get 20 lots filled on 5 Mins in NIFTY some day's.
Now imagine your SL order doesn't get filled even though price is trading at your SL level. What are you going to do? you will be forced to exit at a worse price and it will take just one instance of this to happen and it will wipe out all your profits and if your are lucky you end up breakeven at best.
Worse case scenario , you take a huge loss and it will take a long long time to recover.
Now traders trading just 1-2 lots have no problem getting orders filled, but you are not going to make much money trading 1-2 lots on lower TF, since swings are rare on lower TF.