How can I trade using 50Em &200Em as support and resistance
Use the horizontal lines; you’ll have a clean output!
You can each as a dynamic level of support and resistance since many traders use them, they become self fullfilling prophecy. observe them for few days to see how price reacts at them. Don’t enter just because price touches them. You want to see some confirmation (candle formation for instance) at them
Use these 2 on your chart and then judge the result after 100-120 trade! then if you are happy then go for live trading.