I agree that indicators are not a guarantee that we will succeed in getting a profit in trading, but indicators only make it easier for us to read
market movements. Other things are needed such as risk management and controlling emotions to be able to make the right decisions when trading.
Then don't forget experience is also an important factor in order to avoid mistakes in trading. So a lot of factors that we have to combine,
in order to maximize profit when trading.
But if you can really manage to use it, the chance is higher than those who know nothing.
Even though it guarantees nothing, however, it is a big help when creating our TA's which gives us more advantage. But of course, it seems to be hopeless when we are emotional traders as this thing could just be ignored as our mind has been controlled by our emotions.
This is why I always say trading is not as easy as we imagine, because no matter how good the results of the analysis we do, there is still
the possibility that we will fail. But as you said doing technical analysis can give us an advantage, rather than we trading just relying on
intuition and luck. With the technical analysis that we do, our chances of getting a profit are much greater, therefore we have to do technical
analysis even though it does not guarantee we will get a profit.
In order to know if a trader is profitable, you have to wait quarters and years bc luck plays a big role.
It's easy to think you are a genius bc you were lucky, and even if you were wrong, you can tell yourself you knew it was going in the other direction