Movies are all well and good, but they are entertainment and they don't necessarily reflect reality
Of course there is very little drama in watching someone crawl across the desert, or sit on a raft
You covered it perfectly. Nobody would want to watch real life survival. To hold peoples interest, they have to throw in a few explosions, naked women, guns, velociraptors, car chases, zombies, etc. Which, for the most part, aren't typical in survival situations.