What other acts did Simon peter do to cause him to hang himself?

In the biblical narrative, Simon Peter did not hang himself; that act is attributed to Judas Iscariot after he betrayed Jesus. Peter, one of Jesus' closest disciples, denied knowing Jesus three times before the crucifixion, which led to deep remorse but did not result in his death by suicide. Instead, Peter ultimately became a leader among the apostles and was martyred for his faith later in his life.