>>>try to make this country great again.
This country will never be great again.
Our success was being a sea fairing nation from the 1600s onwards and going off and colonizing all sorts of countries (India, Australia, Canada, a lot of Africa etc) and using them to make us rich.
We then were lucky enough to have loads of coal so we could take a lead on the industrial revolution with steam engines, stream trains etc.
We only "won" WW2 because the USA came and helped us, but it left us with a ruined country and broke (I sometimes wonder if we really did "win" the war, Germany and Japan got help to rebuild, we never got hep from anyone, we just had to pay our war debts).
But we cant go off and colonize any more countries, and having coal is not much use any more (have we got much anyway).
So sadly we are now a decaying Western country (rather like Portugal, Spain, Italy etc) with a collapsing infrastructure (rail, roads etc), a poor housing stock (you only have to watch Homes Under the Hammer on TV to see our awful houses), many cities that have lost their "purpose such as Liverpool (port), Manchester (cotton), Birmingham (all sort of manufacturing) and so on.
We have also allowed in hundreds of thousands immigrants with almost no controls so we have a rag bag of immigrants, many with no skills and who cant speak English who are managing to drag much of the UK down to third world levels.
As a country we can plod along for a while on our past glories, but sorry, no politician has got a hope of every making this country great again.