Only 11% in the UK now think brevity (Brexit) has been a success
A smaller % of people, if any, think importing slaves was a success.
A different % think that wiping down shopping with disinfectant during Covid was a success.
All three of those things have happened and can’t be undone.
What we can do in the future might make a difference, but it won’t undo Brexit, or slavery, or Covid.
Incidentally I’m currently in a country that was delighted to scrape into the EU.
I’ve had to listen to endless stories of all the money that they have received, especially in view of their financial issues. I debated asking what their contribution to EU coffers is, but decided against it.