I'm sorry, but where has everyone been? I have seen countless ads for this movie for the past 2 months at least. Every. Single. YouTube ad has had one of the 2 ads be for this movie. Maybe that's the only place they've been promoting it?
For me, nothing on youtube and nothing in the streets. Only time I saw a billboard for the movie was on a trip to a different country, so perhaps it depends on where you live.
I use Ublock so I didn't see any on YouTube, though it's possible they focused there. I didn't see a single billboard/bus ad/bus stop ad anywhere about this movie.