Going back to a simpler time of S/R.
Identifying the day's first H/L from open to close (Blue Arrow; Around the first 5 hours) until either side breaks out (Yellow Arrow), mixed with directional indicators seems to point at a 70% chance of success by processing hour. (Green Check for a win or Red X for a lose.) Not so much in the range but I suppose it's worth a shot sometime next week. Nothing fancy, just get as close to the price open/close, and away from the wicks. Try this in demo.

GBPUSD
Beyond Technical AnalysisbreakoutTechnical IndicatorsmedianlineTrend Analysis

Penafian