how to subtract 1 day from magneto 2 timezone function?

by |Published August 9, 2022

I have to use magento function for date and I wanna subtract 1 day from following code,how can I do it ? I do not want to use PHP function for date
how can I subtract 1 day from follwoing code ?

$fromDay = $this->timezone->date()->format('Y-m-d');