The plan is for most people to become infected. Lockdown is to slow the process down to manageable levels for the health hubs, that’s all.
Lockdown isn’t to prevent majority people becoming infected.
When lockdown is lifted, much more of us will become infected, and some will keep dying, the most vulnerable groups.
Then a vaccine will be provided firstly to the vulnerable groups, and by then the rest of us who won’t get the vaccine, will have herd immunity.
This is the basis of the scientific document the government is working on from John Hopkins university.
Lockdown will end
We will return to work and school
Social distance measures will not apply where it isn’t feasible
Most people will become infected and people will continue to die
A vaccine will be available to vulnerable groups later
Herd immunity will work as it has for previous pandemics
And the economy will recover, eventually. We recovered after the world wars eventually.
Stop watching the news too much , use common sense to deal with restrictions at present in your own life, and remember that past pandemics occurred, devastated things for a while, then everything went back to normal.