Gmail sends IRS and FBI emails to spam

My company email is copied to Gmail. Over the years, their spam filter has gone berserk. It started from PayPal emails a couple of years ago. Last year, critical PPP loan documents ended up un Spam folder. But recently, we found several .gov emails there, including irs.gov emails and even several emails from @fbi.gov, containing legal documents! You'd think they could at the minimum whitelist all genuine US government emails? Pressing No Spam button doesn't seem to do anything for the future emails, we ended up creating "Never send to Spam" filter for from:.gov !