Experimenting with different indicators is the key. When we practise several indicators, we come to know what will work for us and what won’t. Combining indicators is a good practice. But that should be done when we know the indicators in detail and how to use them. Combining too many indicators at once becomes a mess.
I use only those indicators that are relevant to my trading. At the beginning of my trading journey, I decided to use seven indicators, and the strategy became horrible. I now use only three because I don't want to ruin my trading because of "stuffing" the indicators.
Any trading strategy with a maximum of three indicators will work wonders. I use MACD with Bollinger Bands with 20 MA.
Nice! I use EMA, Bollinger Bands
, and RSI for scalping.