Maybe we need to see Farage (don't like him), Johnsson (don't like him) and the others now tasked with the negotiations. If they can't advance their ideas for a successful Brexit then maybe the voters would be more open to a second referendum.
Johnson, Gove, Fox etc said it would be the easiest deal ever. No downsides, only upsides. The EU would be desperate to do a deal. German car makers, Italian wine growers etc. would be banging on the door insisting that their governments did a deal. It was pure fantasy and nonsense then and still is now. Johnson has been on TV today with his usual fusillade of flatulence. They have advanced their ideas more than once, have been proved wrong more than once - why should they be given yet another chance?
As I see it now, the people trying to negotiate Brexit are the very ones who want to remain so they have a vested interest in making it fail.
I can see that May has tried to come up with some sort of compromise, even if I personally think it is unworkable and not in the interests of the UK, but 'the people trying to negotiate Brexit' were Davis, who wrongly thought that he could negotiate with individual members, and Raab, who didn't know that Dover was the vital, 10,000 trucks-a-day link between the UK and the EU (and who actually wants to take the UK out of the EU so that he and his cohorts Patel and Truss can enact 'Britannia Unchained' and remove all employee and consumer protection, abolish minimum wages etc so that the UK can compete with the low-regulation, low-wage economies of Asia)