I have a lawyer (a fairly reputed one -
www.veemanlaw.com) and he mentioned that seeking government dole (CERB) while your application is in progress (and even after you get PR or citizenship if you want to sponsor your close relative in future) is not a good idea.
You will be viewed as someone who leans on government funding and will face issues in getting PR or citizenship or sponsoring relative.
[/https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/immigration-applicants.html
Make your reputed laywer read this .