Alternatively, UK is home to
65,000,000-23,000 non-jihadists.
As awful (and it absolutely was awful) Manchester was, they managed to kill less than 0.00004% of the uk population
The 911 attacks killed les than 0.0015% of the us population.
There will probably be more attacks. It will be horrible and people, maybe me, will be killed. But they are not going to destroy us.
(Unless North Korea sells them nuclear stuff. Then we could be a bit fucked.)
We need to calm down and retain perspective. Which is admittedly really hard in the face of such barbaric acts.