It's a trial and error process, to be honest.

You have to find certain indicators that will fit your trading style, and that will cost you x amount of funds in order to apply the indicators you want to find the right ones for you. Now, for me, using only one won't work, I'm using at least 3 indicators, you have to make sure your price chart is readable for you to be able to see in which price or point you're going to enter your trade.