How does this method work?
To increase views, first identify where your video is struggling. It may not be shown to the right person, it may not be selected when shown, or it may not provide the promised response when opened. These three problems are not solved by the same method. The headline and thumbnail create a promise; If the video doesn't live up to that promise, just more clicks isn't the long-term solution.
Evaluation with a concrete example
If a transportation guide is shown more and less selected, the route and benefit may be unclear in the title. If it is selected but the audience leaves within the first minute, the long personal introduction may be causing problems. These are not definitive diagnoses but possibilities to be tested. Comparing the click-through rate of two videos with different traffic sources without context; search and homepage trackers may behave differently.
