it is hard to say that in trading it is not 100% that all of your prediction is accurate but if you know how to analyze and reading candlestick you have high percentage in gaining income.yes you gamble in that coin but it is part of trading, not all the time you are gaining sometimes you lose and it is normal for traders and investors.
You nailed it. Even if you have you TA or know to analyze and read the market chart this will not guarantee a 100% outcome because sometimes there are few sudden factors that could affect the movement of a particular coin. But with the help of analysis, it mitigates the risk of losing your trades. It would be only a gamble if we trade without taking any analysis. Loss is just normal, it is part of trading, not all the time you will have a fruitful outcome and you should know it.