Stop trading a system if it doesn't fit your trading style and find you cannot follow the signals. There are no guarantees or certainties in trading. Reliability of trading signals for mechanical systems are in probabilities only. Trading involves hard work, risk, discipline and the ability to follow rules and trade through any tough periods during a system's drawdowns. If you are looking for guarantees, trading is probably not for you.
Most people lose trading.
One of the reasons is that they lack discipline and are unable to be consistent. A system can help you become consistent. The ability to be disciplined and take the trades is equally as important as any technical indicators a trader uses. Ironically, worrying about the money aspect of trades can contribute to and cause a trader to make trading errors. Therefore, it is important to only trade with true risk capital.