What indicator you use for scalping?

Classical indicators for scalping in my opinion are ema and oscillators. They help me a lot and due to them I passed plenty of difficulties. However, it doesn't mean that they will help you, never consider this as the financial recommendation. I just want to advice you to choose those indicators, which show good winrate percentage. Of course, you will have mistakes and losses. You can't get rid of them. However, due to the proper choice of indicators, you can minimze these risks and increase your winrate. Ema, for me, is the basic indicator which help me to determine trend reversal. It' suitable not only for scalping, but for intraday as well.

I use moving average. I think it is best for all kinds of trading strategies.

Not all traders trade with indicator. Some professional trader trade with only simple price action.

You have to cultivate the nature of practicing a lot on demo account for the betterment of yours. There are so many e-books containing the basics of Forex trading and a pile of video tutorials available on Youtube. So, never get dejected if this learning takes time, rather keep patience.

thanks