I feel like everyone has had a movie partially spoiled by a trailer but I also feel like descriptions, movie posters, and even genre tags can be a give away and make a plot twist or scene less impactful.

One movie I vaguely remember watching without any context was the 2021 movie Oxygen. I enjoyed it but I feel like it would have been slightly more predictable if I had looked at the genre tags and that would have effected my enjoyment.

I feel like you need to have a pretty good sense of someone's tastes to make a "trust me"-style recommendation like this.