How can one find those spots (red dot), to initiate a trade with a high probability of over 80%? Yes - if you short the upper Medianline Parallel, then you have a chance of >80% that price reaches the Centerline (grey).
The "secret" lies in KNOWLEDGE. If you know WHY you choose the spot where you draw your lines, then you know the reason behind it. And then you know what to EXPECT from your TA with Action/Reaction.