More delusional thinking.
I have lived in ten countries, as my parents where Diplomats.
Moving from Bangladesh to UK is pretty much always an improvement. But that tells you nothing about the state of the UK.
I have lived in Norway, Canada, US, Spain, and UK
And the UK is in an incredibly poor state. The standard of living since I was here last (1990s) has gotten measurably worse.
Healthcare, Housing, Transport, Services, Schools...all much worse.
Its high time the locals stopped lying to themelves about the situation. It is getting tiresome.
Nobody cares that people from Bangladesh or Pakistan or Philippines see the UK as a good destination. That tells you nothing about the current state of the UK relative to other developed countries.
The other developed countries want nothing to do with us because the quality of life in the UK has deteriorated too much, so nobody wants to move here anymore. Even London is problematic (for high earners even).