Robert Downey Jr is the obvious case of a person who had a redemption arc, to simplify it he was a promising actor that got addicted to drugs, fell off, went to rehab and then became a huge hollywood big stsr known, even known for being Iron Man.
What real life person had a redemption arc?
a former coworker of mine went to a federal penitentiary for bank robbery. afterwards he turned his life around and his kids were on track to do good things.