I believe a close does have relevance, but certainly isn't the most important variable. Traders mostly look for oversold & overbought conditions to maximize return and reduce risk.
If that was to be true there would be 100% edge present, but it just isn't so. "Every day" is far from reality, why don't you trade daily closes & we'll see.
I should have known better & not closed previous long, as ASX was rock'n'roll when Naz was selling off, clearly they didn't buy the fake shite decline.