So... if i kill you and if i can scape with no punishments becausa the wrong judge judged me, then are back to life?

You are impling there was a crime. The judges who freed Lula determined that all accusations against him had no relation with Lava Jato. Judge Moro tried to relate them to keep Lula from running, he was Bolsonaro ally and Lula was freed based on that, there was no crime. A convict is not always guilty, they can be freed any time, even when other courts think he was arrested unlawfully. Lula could be arrested by 10 courts and it shouldn't matter. As long as one find that all those accusations were unfair, they can vote and free him.

No, no one is back to life, but any other prosecutor is free to trial and any other judge will judge you. Let's say my mom was the first judge, yes, you should be free until you are proven really guilty by an impartial judge. It is really not that hard to understand.