Being transparent would be a start though. The tories in 2019 were still making Red Bus promises about how Brexit would save us all billions we could spend on the NHS.
Yeah most people will percieve austerity as saving. As something like when they stop paying netflix or buy less of the expensive cheese they like.
Inherently a good thing that will lead to having more money in future.
Then just say people are stupid and abolish voting. If the public doesn't have the mental tools to evaluate the simplest of electoral programs then what's democracy even good for?
It's probably good for a lot of things, but clearly has drawbacks everyone intuitively agrees on (no one would want medical doctors to democratically seek advice from their patients, at least not on complex decisions like which medication to take)
The "10% less democracy" concept (https://www.sup.org/books/title/?id=28088) is interesting here, and frames the question as "when and how much" as opposed to "democracy or no-democracy"