I know of no legal system that doesn't fail in some way. Some are much worse than others, but all have flaws. Often correcting the flaws is worse than living with them.
Don't take the above as we should just accept the flaws. We should not. However what to do about them is a hard problem and we should not do something that makes things worse.
I'm sorry, I don't mean to be rude, but also I can't discern a single bit of useful information in your comment. It is all tautologies, and would apply to any human endeavour. Yes, nothing is perfect, it's possible to make things worse and we should avoid that. Sooo...?