From what I have seen in discussions and the below, more people actually think it was a bad decision to leave the EU:
Brexit poll 2024 | Statista
The share of people who regret Brexit has increased since the UK left the EU. Recent polls show a growing majority think it was the wrong decision.
www.statista.com
One in five who voted for Brexit now think it was the wrong decision | YouGov
The wider public now think Britain was wrong to leave the European Union by 56% to 32%
yougov.co.uk