Simplest strategy consists of following a trend. Apply 20EMA to D1 chart: 20EMA sloping upwards is uptrend: sloping downwards is downtrend.
Wait for pull-back and set buy order above highest price in the pull-back, with stop-loss below the lowest price in the pull-back. When the buy order is triggered, hold the position until the next pull-back and get out then. Repeat the process.