The title is half the click
Before a viewer sees a single frame, two things decide the click: the thumbnail and the title. A great video with a vague title never gets the chance to prove itself - the algorithm reads low click-through and quietly stops suggesting it.
Strong titles are not clever, they are specific promises: a number that sets expectations, a gap the viewer needs closed, a claim that demands proof. That is what formulas encode - the reusable mechanics of titles that earn clicks without baiting them.