Is There an Exit Strategy for Putin?

Many people who oppose us aiding Ukraine argue that this is an existential fight for Putin. And the argument has been that if he loses, he'll be deposed from power. Let me tell you why I don't think that's likely to happen and why I think there is an exit strategy here for Putin. There's no scenario where using a nuclear weapon would result in his victory. It doesn't win the war for him. He could just say, we've accomplished our goals and we're now leaving. But nonetheless, is still the leader of Russia and most importantly, is still alive.