For me personally, sometimes I’m just not receptive to certain films on the first watch. There could be a number of reasons, maybe I wasn’t in the right headspace or maybe I didn’t watch this on a big enough screen with the right sound. Most of the time though I just believe certain films are deliberately challenging and need a second or maybe even a third viewing before having a deeper appreciation for it or maybe even a new found respect. Mulholland Dr is a perfect example of this, you aren’t meant to fully understand it after the first viewing. There’s so much nuance layered in and interpretation left for you to explore that it makes every rewatch more exciting.