The game has some really interesting things going for it. The sudden shift to real footage worked well to sell the feeling of eeriness and confusion. The unique addition of interactive minigames was also welcome and I would have loved to see more of them but saw in another comment you struggled with the forever-problem of game jams: not enough time. Still, the ones you did have time to include were really neat additions. One small point of feedback would be to unify the control schemes for the minigames. In the bicyle minigame you use the W key, whereas during the side scroller section suddenly switches to the arrow keys.
Other than that I just found it a little strange how many times the text boxes just described the literal events being displayed by the visuals as if it was the actual script. Stuff like "Cut to...", "... fills the frame." and "A closeup of...". These things are already conveyed by the art so I feel like you could accomplish more by using the different media of the game (frames, text, audio) to each explore and "paint" different aspects of the scene to really sell the story.
Either way, Bougainvillea was an interesting, unsettling but relaxing game that I enjoyed my short time with.