The conclusion is most definitely not "improvements are result of chance rather than treatment". You've also used quotes here but there doesn't appear to be any reference so I can only assume you're quoting yourself :)
I assume you didn't read (or perhaps chose to disregard) the article I referenced in my original comment as that provides evidence to the contrary of what you are claiming. Another much shorter article that you may like to read states "Experts have concluded that reacting to a placebo is not proof that a certain treatment doesn't work, but rather that another, non-pharmacological mechanism may be present." [0]
I assume you didn't read (or perhaps chose to disregard) the article I referenced in my original comment as that provides evidence to the contrary of what you are claiming. Another much shorter article that you may like to read states "Experts have concluded that reacting to a placebo is not proof that a certain treatment doesn't work, but rather that another, non-pharmacological mechanism may be present." [0]
[0] https://www.health.harvard.edu/mental-health/the-power-of-th...