There's so much wrong with this that I don't really know where to start.
No, you don't "tacitly agree to accept" anything if you live in a democracy. The whole point of a democracy is that you keep fighting for what you want. By your logic the Brexiters should have accepted the result of the 1975 referendum and stopped whingeing.
As for the electorate being uninformed, well, they clearly were. As evidenced by the spike in people from the UK Googling "what is the EU?" in the immediate aftermath of voting to leave it and the astonishing display of ignorance about how literally any of it worked.
The opportunities that have been removed from British people have not been replaced by anything even remotely equivalent - this is particularly true for students, whose opportunities to study abroad are now far more limited and much more expensive than they were before - and working class people are certainly no better off.
Our common law legal system was, is, and remains intact and was not affected by the "civil code" in any way. A civil code is a body of legislation in force in countries which have a civil law system, and has nothing to do with the UK whatsoever.
Parliament has not really gained any sovereignty, given that the only areas where we agreed to share sovereignty in the first place were in relation to international trade, and we have now become rule takers rather than rule makers. Furthermore, what is the point of parliament being sovereign when they are so removed from the people? Does parliament regaining some theoretical sovereignty give you, a voter, any more control over your own life? No, of course not. If you're concerned about democratic legitimacy you would be better off campaigning for electoral reform. As a gender critical feminist you will be well aware that there is currently no party you can vote for which will protect women's rights, and that the Labour Party which will win the next election more or less by default plans to legislate women out of existence by redefining us as a feeling in a man's head.
Finally, there was no "punishment". It is completely obvious that when you leave a club you can no longer enjoy the benefits of membership. If you could, no one would pay to be a member. If you interpret the negative effects of Brexit as a "punishment", you're really just admitting that it was a shit idea all along.