Unless you go off the grid, it's a challenge to shield yourself from spoiler / non-spoiler bits and pieces of an upcoming film. I'm long enough in the tooth to remember my only exposure to an upcoming film was a theater trailer, maybe a TV trailer. It wasn't rare back then, we get in the mood for a movie trip, grab the newspaper, and just point - let's try that simply because it might have an actor or director we liked, or simply the movie title. No idea going in. Hard to duplicate that perfect spoiler-free experience today.
Allow me to share a perfect spoiler free experience years ago. I was at one of those bargain bin barrels - 5 DVDs for $20. I picked 4 I wanted, couldn't find a fifth. Then I noticed, From Dusk Til Dawn. Okay, Tarantino, crime action - give it a go. Up till that moment, I never even knew that movie existed. Half way into the movie my mindset was "locked" into crime action. How's this family going to get out of this dangerous situation with the psycho Richard ready to blow. Then the bar scene arrived, you know the details. I love that surprise, very focused on real-world like crime action well into the movie and it turns on a dime to fantasy horror.
First run of Alien was pretty close to that, but we did know it was sci-horror going in. Other than that, saw nothing at all about the film, not even word of mouth. Coming out, I hadn't felt that deep dread since The Exorcist.