This strategy is based on trading fibonacci levels. You can lower the risks by selling just 1 satoshi higher than buy price.
BUY at fibo 0.5 30 31 32 sat SELL at 32 33 34 BUY at fibo 0.618 33 34 35sat SELL at 36 37 38 BUY at fibo 0.382 at 26 27 28sat SELL at 28 29 30 BUY at support level 18 19 20 sat SELL at 20 21 22