each one prefers specific indicators and this depends on the strategy you are following so that before using any indicator you should try it on a demo account to ensure that it is suitable for your beginner and each indicator has a setting that must suit your trading style. However, the indicator makes a lot of false signals so you can't depend on it, but moving averages are a special case because this is one of the most correct and famous indicators so you can't ignore it. and I think 200 shows you a good view of price movements