It's not that we can't make it work, it's the reluctance to accept the boring reality of Brexit. It needs money, investment, and an expansion of the state to replicate functions that the EU did and we had outsourced as a member.
It should have been considered as an expensive decision. The idea it would save money was ludicrous. Instead what has happened is a lot of people believed they would get the money that we no longer sent to the EU.
That has not happened and imo was never likely to. I do think people were very naive on that, because having a lot of Conservative politicians campaigning for this and one's mostly known for thinking state spending is an evil, that people really thought they would get money.
As it turns out they have got less. A bird in the hand is worth two in the bush. Perhaps the English people might regain their reputation for skepticism of domestic politicians as well as those in the EU. We would make better choices.