Beginners will read such explanations, then they will open the charts and start catching such candles. Then they will make a trade based on similar descriptions, but the trade will be negative. This is how disappointment and surprise come from the fact that everything seemed to be done right, but for some reason the market went the other way.
The answer is extremely simple. It is worth considering the context in which we observe one of the candles listed here. This is of great importance. Candles by themselves are of no value in decision making unless we know exactly where to look for them. For example, ENGULFING CANDLESTICK works only when testing some levels or trends, if we see such candles somewhere in the middle of the figure, then these candles are of no interest. And so on, each pattern only matters under certain conditions.
This is totally precise and this is what i had experienced when i was still a noob and able to tell to myself that it was never been effective but i didnt stop on applying technical indicators which
it does sometimes been precise but most of the time the entire market could easily fucked up technical analysis but just like we do know that this market cant really be having news or fundamentals
most of the time, which does means that you would be having no option but to stick out on using these indicators so that you wont really be that guessing
which is something that not recommended on doing so.