People absolutely do have a problem with legal immigration, especially post-Boriswave.

If legal immigration means millions of new people every year and rapid demographic change, of course that will cause a political issue.

It would be very strange (basically unheard of in human history) if it didn't.

People I know who are non-white all report increased racism (mostly not aggressive but noticeable) since Covid, despite having English accents so clearly not being illegal immigrants.

That is caused by reckless immigration policy stoking resentment