I will try to be useful to you now that you seem to have stumbled upon a morsel of reasoning about what you're proposing.
You have a hypothesis - "here is where the market is likely to break lower". Can you quantify it? Is this two bars closing lower than your first marked bar?
I have ran a study of a similar kind as a baseline for channel trading. I have found in small time frames this type of breakout is tradeable but over a number of years fails to produce positive results. Running the results through a monte carlo ruin simulation shows the drawdowns are impressively high for any given return realization. You might expect this since the general markets have been trending up for the last 10 years. Simply buying and holding (minus roll risk) actually produced significant profit. Is this indicative of a working strategy? I don't think so.
In fact, the sharpe ratio of a very famous moving average strategy from the 60s was an impressive -1.86 over the last 10 years. These simple strategies alone do not produce profit. There is too much noise. Gone are the days of simple trend profits with simple systems.
If you are trading this, this is not the only way you are looking at it. Perhaps you are using the order book, news feeds, etc (subconsciously or consciously) to augment your strategy. I can tell you with near certainty basic n-day breakout strategies do not work on anything I have tested (ES, NQ, M6E). The beauty of systematic backtesting and ruin analysis is it takes you out of the equation - it tells you the absolute potential of a strategy alone.