It might be possible that some very well connected large market institutions (GS) would have at their disposal tools & the experience to know when the markets are lopsided to the point of unsustainability and then they would take the other side. Unfortunately retail traders are flying blind compared to what some instos carry in the way of market data and night 'vision goggles' information. Having the right tools is the groly hail.
AFAIK, the holy grail once existed and was invented by Jack Hershey who posted the invention just like something below:
The hat tip to Jack is solid but that’s not a sct chart. That looks like more like fibs. Understandably, charts heavily annotated might all look the same.
BTW, there's an entry requirement to learn the JH method: IQ 95! That's why I didn't start learning it at all. That means actually I cannot prove anything about his claims, such as daily earning 3 times of ATR every day.
If there were a HG the owner would be fabulously wealthy. The obvious billionaires didn't get rich from financial trading as we see it. Nobody knows what the forex pair will do in the next 10 minutes let alone weeks/months.