Lexi was a lot better than the usual found-footage trash you'll find on Tubi. The faux-mockumentary approach actually works in its favor, and the absence of unnecessarily shaky cam and a negligible reliance on jumpscares add to its positives. There's also an interesting discussion about how modern-day content creators are looked at, beyond their channels and platforms. The perceptions vary, especially in a world that's interested more in seeing people's downfalls than successes. In the world of content creation, phrases like "controversy creates cash" and "trauma/sex sells" are commonly heard. This also makes it hard to differentiate what's raw & real and what isn't.
The actual horror part of the film is also only subtly put across. They never show an outright entity or person that results in Lexi's descent into paranoia. It lies in the unseen, the unheard. The actress playing Lexi - let's forget she's referred to as a 29-year-old because that's BS - but her expressive eyes had me hooked. Every time she was directly facing the camera, it had a bit of a spooky effect on me. Her performance, while a bit overboard in the final act, was pretty solid overall. The ending leaves it ambiguous; we don't get to hear from Lexi's friend who keeps texting her, or Lexi's mother, and from a writing perspective, I guess that was a miss.