I dunno what you're using, but GMail is doing great for me. The vast majority of the truly crappy spam just gets dropped on the floor. Practically none of it gets into my actual inbox. My spam folder gets about 1 message per day. About half of it is well and truly spam. The other half is more-or-less legitimate mass email, and I unsubscribe to them when I notice them. The emails you're describing sound like cold call…
One of the businesses uses Google Workspaces, just with the business you get way more spam.