What do you mean by how many solutions do they have ? There are countless, if they put their brain to work.
No one plans to reduce interest rates, that will be suicidal. Polim Poilievre, head of Conservative Party, even vows to fire the governor of Bank of Canada for his reckless management during the Covid years, a.k.a. money printing policies = high inflation afterwards.
As for real estate, which contributes to almost 14% of the GDP by the way, is in a freaking bubble and way way overpriced. A $1M home in Canada is as would be a $350-400k one in USA and comparing the wages and affordability in the two countries, you can clearly see how overpriced they are in Canada and the reason is not the lack of them, its property taxes and foreigns/companies being able to purchase them. The same is happening in the USA by the way.
How do you correlate lack of immigration with increased wages ? As a rule of thumb, wages should be increased every year at least based on inflation, and not inflation as a whole but based on the inflation of products of the basket. Immigration should be a problem solver, bringing people in professions where you lack and not bringing random professionals because then you create another problem. You would have too many professionals in a profession which already has an oversupply, leading many of them to change carreer / get payed way less or stay jobless. Not to mention that you still haven't filled the jobs which are really lacking people.