I'd think that calling people cretins and idiots goes some way to explaining your disdain.
NHS and care homes in crisis, transport services desperate for drivers, food rotting in fields (all forcing up prices). No immigration means a declining population with a "working class" (anyone who works?) paying ever higher tax for benefits and pensions for those who don't work. It's unsustainable.
I can't work out whether you like supply and demand. But the growth of industrial cities like Manchester was because the demand for labour was satisfied by immigration, supplied from rural areas where the mechanisation that enabled the industrial revolution also cost jobs on farms.
I think you just don't like foreigners.
"I can't understand your (simple) immigration position so I presume you're a racist or xenophobe".
Looks like I won the bingo