Yes, It is true, Indicators sometimes give wrong signal, but that means not trader will get loss...
If you will use indicators in big TF like H4 and D1, You will definitely earn profit of at least 50Pips...
I'm using 3 Indicators....
1. MACD (12,26,9)
2. RSI (14)
3. STOCHASTIC (5,3,3) (14,3,3)