Every four years, we have a general election. On each occasion, we are effectively asked if we are reasonably happy with the current government or do we think another party can do better. Each party tend to have one or two flagship policies which the public can evaluate.
In 2016, we were given lots of reasons / opinions / speculations / trash / scaremongering for remaining and leaving but the issues surrounding Brexit are complex in the extreme. Frankly, even having a PhD in European Affairs coupled with years of research is not enough to enable someone to make an informed decision. Hence I think holding the 2016 referendum was a very flawed decision.
Margaret Thatcher once quoted Clement Attlee that referendums are "a device of dictators and demagogues".
As it is, there is probably no way out except holding a second referendum. And yes, I do see the extreme irony.