The condition of the market could be different when they were doing it than when you were doing it. I would advise you to listen closely to whatever tutorial you were following.
Yeah, even the basics of trading are always same but due to heavy changes on the volatility of market fluctuations, old strategies may lead to stoploss hitting as they need further finetuning with respect to latest trend of market conditions; this is why we must always need continuous learning and then updating our skills and techniques.