To get the best out of any analysis confluence between multiple tools is best because it gives a clear picture of where to possibly set take profit and set a stop loss in case of reversals. For me i Iove support and resistance and so I combine trend lines, moving average, time frame and indicative candle stick making sure my chart is as neat as possible and any signal outside this i avoid it. This keeps my trading discipline in check.
What are your own it can be beneficial to someone else.
Doesnt matter on what indicators or tools you would be using when you do make trades neither it would be combination or would be using a few ones to make your chart to look clean as possible.
When you are already experienced then you could eventually make some support and resistance lines on a on spot manner on where you arent putting it literally and im like that honestly.
If you dont like to miss out then its not wrong on putting how many indicators as much as you can as long you could able to read it then thats what matter the most.