There is nothing wrong with Immigration, we have had immigration in this country for a century, none of it has ever been a problem.
However. Over the last decade we have had the wrong sort of immigration, the sort of immigration that is culturally vastly different to our society and does not want to integrate, some of them are not nice people, that immigration is also way too high so its a real strain on our services and when 10% of 1m+ people mean us harm we know about it. its that sort of immigration Socialists and Globalists tell us is a good idea.
The other side of that coin is uncontrolled Immigration, that's the sort of immigration that drives natives out of work and forces wage stagnation on those who already barely keep their heads above the water line, its that sort of immigration those who pay our wages tell us is good for the country.