There is no mention in the Bible of what happened to the the resurrected ones, including Lazarus. This is rather odd. Given their extraordinarily remarkable experience, one would think people would be thronging around them asking questions and that their lives would be followed and chronicled. But not even a word about them after their miraculous experiences. That it never happened is testimony to a logical conclusion that it never happened. The Lazarus story is remarkable in other contexts as well. Early Christians referred to Lazareth as the Wandering Jew, who was condemned to walk the earth forever in order to fulfill the folkloric prophecy that Jesus would come again in the lifetime of at least one person who had seen him when he made his first appearance.
All nonsense, of course. If Lazarus was not a ficticious character, there is no evidence to support he ever existed, just as there is no evidence whatsoever that the biblical accounting of his resurrection wasn't ficticious.