I might be missing a joke, but if not, there is a saying ‘closing/shutting the stable door after the horse has bolted’. It’s used in a context where someone has

I might be missing a joke, but if not, there is a saying ‘closing/shutting the stable door after the horse has bolted’. It’s used in a context where someone has acted too late. https://english.stackexchange.com/questions/104948/english-proverb-for-when-a-solution-comes-too-late https://english.stackexchange.com/questions/104948/english-p...