Yes, great white sharks off the South African coast are known to breach and catch fish, seals, and sometimes birds in the process, but humans? We're way too big for them to exert all that energy. Movies have never really been much for accuracy when it comes to sharks. Jaws famously made everyone afraid of summer beaches when shark attacks are, in fact, incredibly few and far apart. Films like The Reef and The Shallows portray sharks like the Psycho Stalkers of the ocean when it's extremely uncommon for them to remain in one location at a time or even follow a single target.
Besides, after many years of tasting us every now and then, they do not seem to have developed a liking for human meat. And speaking of The Shallows' inaccuracies, that shark would have been so stuffed from eating that dead whale — they can totally overeat, just like us — that it wouldn't have bothered with the less-fatty humans in the water. Heck, it probably would've been in a food coma and just floated away toward the deep sea, leaving Blake Lively to have a fun little surf and have a good cry about her mother.
Lastly, sharks won't ever survive in caves — caves are low-energy spaces, meaning there won't be nearly enough food for an apex predator like a great white as we saw in 47 Meters Down: Uncaged — and they also won't evolve (and so quickly) to develop any blind, white eyes.
We do have some deep water sharks on this planet of ours, but instead of those blind, freaky-looking white eyes, their eyes have evolved to be much bigger than your average shark, so they can catch as much light as possible down in darker waters.