Why is the result so unstable?

You had 10 sales yesterday, but not today. How could that happen?
Let’s consider potential explanations…
Why does this happen
First of all, every day and season are different. Cost and competition vary from one day to another. The pool of people you arrive will never be the same. There are only a few factors that are the cost of simply reaching people every day.
Secondly, sample size is important. From 10 sales to 0 seems to be huge, but? If you go from 500 to 490 a day, you won’t notice this. When a few sales of the day can make a big difference, you will never see consistent results.
Third, the results you see are often affected by other efforts. For example, did you recently send a promotional email? Is the blog post traffic more than usual? Have you created some videos that have attracted attention? Any of these things can enhance your ads.
at last, People are not robots. Meta’s only job is to show your ads to people who are most likely to convert. On some days, a bunch of them would. In other ways, they don’t.
Especially when we deal with smaller sample sizes, disappointing results may not be related to the meta. No conversion guaranteed.
Your role
That’s why it’s so important to close sales for your job. Copying, creativity, your quotes, your landing pages, and efforts outside of your ads are key elements of your control, thus affecting the results. Focused here.
But most of it is in your hands.