You didn’t read me my rights!=I’m clueless about criminal procedure and really think that this means my arrest is invalid and you have to let me go.
If I had a dime for every time I heard it…..you need custody AND interrogation to require Miranda. That means Miranda only matters if I have arrested or detained you against your will AND I start asking you questions that I plan to use against you in court.
If you are free to go and/or I didn’t ask you a question, Miranda isn’t needed.
Anything you say to an officer before you’re taken into custody—and read your Miranda rights—can be used in a court of law, which includes interviews where a person is free to leave the premises, and things said at the scene of a crime.
Even if I interrogated you without Miranda, all that really means is that the stuff you said can’t be used as evidence. It doesn’t “make your arrest invalid”. If the words you said are essential to my case it can kill any chance of a conviction, but it’s not a “magic unarrester”. So..don’t embarrass yourself in Court by telling the Judge that he has to let you go and dismiss all charges because the Police Officer didn’t read your your rights.