2nd conditional (also called conditional type 2) is a structure used for talking about unreal situations in the present or in the future. This page will [ . . . ]
Admitting mistake is the way to admit and ask for a sorry of your mistake.
Note :
Mistake is a misunderstanding or misconception or an error in action, calculation, opinion, or judgment caused by poor reasoning, carelessness, insufficient knowledge, etc.
When you have a mistake to someone you need to plead your mistake, so the problem will be clear.