Okay I see the problem, it's when a buy/sell is triggered and then a strong trend happens in the opposite direction you get a huge drawdown..Perhaps an option would be to switch the next martingale position in the direction of the previous candle? That way if we get a sell positioned open and then the candles after become bullish the next position would be a buy position, or alternatively the option to close the current position and open a new trade in the new direction.
Another option could be a filter such as a look at the weekly and only take trades in that direction or a moving average possibly....
Another option could be a filter such as a look at the weekly and only take trades in that direction or a moving average possibly....