sell to at least 50% of an influencer's audience, possible or illusion?

at first the influencer will not talk about the product itself, she will comment that she bought a method that she can earn extra income just with social networks, on the second day she will comment that she is using the methods and that she really seems interested, believes that it might really work, on the third day she will post a small result, around 60/100 dollars on the first day, a print of the bank account with that amount, then on the fourth day she will post a bigger result and always using persuasive words to convince the public, so on the last day she paid what she paid "and as you saw, it really works, just put all the material into practice and you can earn extra income just with social networks". she would say something like that on the last day and boom, I believe that seeing at least 15% of the public that follows her in the stories, this strategy is still valid, am I not kidding myself?