You don't know people voted for Brexit or what they expected, though i do think lower immigration would have been high on the agenda.
On rules, EU is still a large export market, we cannot export into this, unless we follow their rules and regs, thats a simple fact of life.
Environment protections and product ingredients, UK cannot just do as it likes on all of these either.
Payments into EU bodies? such as Horizon, a program that benefits the UK's life sciences.
I wont mention Erasmus, as i suspect you re totally against giving UK youth any advantages - now been widened out to inc lower level educational programs.
The EU divorce bill is around £42 billion and then there was all the custom controls we built that then weren't needed....
What is "absolute Sovereignty?" we don't have that with the UN, with NATO, with International courts...
Vast majority of UK electorate should not be given votes on complex subjects, thats why we vote for an MP/Govt to make these decisions on our behalf, if you think we should be, where does it stop?
Govt would be even worse than it is already.