Anecdotal Evidence Against Segulos?

It appeared the Bris would have to be delayed, because of high jaundice. So, the mother borrowed every possible Segulah, listened to every neighbor, and recited every prayer. But by the seventh day, there was no improvement at all. So, she stopped washing the baby’s hands every morning. The parents already canceled the catering, the hall, etc. And then the bilirubin count suddenly dropped, and they performed the Bris exactly on time, with barely a minyan.

So, you see? Segulos don’t work!

But that doesn’t disprove Segulos at all, the concept endorsed in Chazal. Indeed, using more than one Segulah at a time shows a misunderstanding of the source, like buying multiple lottery tickets. Bitachon is the best Segulah.