what does "wreckage" mean here?

Native speaker’s answer
Rebecca
"Wreckage" is usually defined as the remains or debris of something. Here, "wreckage" likely represents difficult circumstances that the singer was in, or a terrible life situation. This is confirmed by the next line, "can't understand the way I turned myself around," which expresses that he was able to improve his life ("turn it around" from bad to good). Ex: I was able to walk out from the wreckage of my failed relationship. Ex: My life was a wreck, but I turned things around.