Earn the next test
Platforms try a video with a small group. If that group watches, shares, or searches after, the video gets a larger group. You do not persuade a platform with hashtags. You persuade the first group of people.
Look at three levers: the idea (would a stranger understand the title), the package (thumbnail or cover and the first line), and the hold (do they stay). Fix the worst of the three. Then post another video in the same lane so the next test has a pattern to recognize.