If the price is below the 200 , you are allowed to open only short position and avoid longs. Don't use this indicator alone, use , etc. Do not use this indicator like a bot, do TA and FA as well. This is just an indicator, do not always rely on it. It requires experience. This indicator has different winrate in different timeframes. Set its value accordingly.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.