Even sites that are known to give sure predictions also fail in thier prediction and that's why you can't even rely on such thing as expert prediction.
There's no sure prediction. It is called prediction because it was something not sure to happen.
You relied on prediction, to give you more ingredients in your current analysis, not to directly follow it and place a bet on it.
Of course, there's no 100% prediction. It won't be called prediction anymore if those are accurate.