In my opinion they do not work because stocks are better.
It is easy to detect in the pre-market what will be the stocks with the most potential.
Futures trading is more dangerous because you must risk more to get less.
Of course futures work, however an index will move 1%, 2% and a stock can easily move 4%, 6%, 8%.
I mean that the benefit-risk ratio is favorable to stocks.
My question is:
When one is a beginner in intraday trade, is it not easier to start with stocks?