It’ll be beneficial to your trading to break the habit of thinking in absolute terms. The market is a probabilistic environment so things don’t “always” occur a certain way, but behavioral tendencies that repeat often enough do warrant attention.
The context on 4/9/21 showed far more buying pressure than selling pressure up to the point where your short trade was taken so the whole number was a significant magnet to keep in mind since it was a logical place for the market to try to go. Again, higher time frame awareness, how different market participants are likely to behave and interact in different circumstances, and how the market had been trading in general over the prior few sessions was important too.
In terms of reversals, as with everything in trading, many factors are taken into consideration when making decisions. There isn’t a simple answer. Depends also on whether we’re talking about major trend reversals, pullbacks, reversals in a trading range, and so on. Even then I don’t know that something will happen, I am just assessing probability, risk, and reward and take trades if I think it’s likely to be favorable to do so.