I don't use indicators, they're not my style, they lag, they repaint; and in my opinion they don't work.
The 200 EMA on DAILY can be useful because of how slow it is. We can use it to filter the direction of which way we trade.
Price ABOVE 200 ema = ONLY BUY
Price BELOW 200 ema = ONLY SELL
Then drop timeframes for your entries via your strategy whatever that...