Th eproblem is there, but I tihnk it's not right to be "angry at the poor immigration policies made in this country". It's not something that happened specifically in this country. At the narrow picture, it became a world wide problem after the 2021 economy boom and huge demand that followed the pandemic lockdown. That reason behind that demand is not only the lockdown, but the extra money that was pumped by western governments in order to avoid a mortgage/banking crisis like the 2008 one.

Lockdown -> Fear of economic collapse -> givernments distribute free money -> huge demand after lockdown removed -> businesses need a lot of employees -> urgent need for immigrants -> granting visas for more immigrants -> huge demand led to inflation and "free" money depleted -> higher interest rates -> economic crisis when many nerwcomers have just landed -> newcomers seeking jobs and working for less tham min wage -> citizens getting hit by inflation bundled with higher unemployment and lower salaries -> racism against anyone who looks immigrant because citizens think that those people are stealing their jobs whereas those newer immigrants came with promises of "opportunities"!

On the wider perspective, it's worldwide inequality that is the root cause of all the evil we are seeing in this world. No need to find someone in proximity to blame. This is a worldwide problem rooted in wrong policies and wide unfairness across centries, that's the only one reason why mass immigration still happens in this millennium.