How do a whales operate & make profit?

Sorry noob question.

I'm confused.

Example:

Market activities(data/book):

0. Coin value = $100.00 / unit
1. Total buy order = 1,000 units
2. Total sell order = 2,000 units
3. And then a whales add +50,000 units sell wall more (dump) for XXX coin for $95.00 value
4. So the buy order would be 1,000 units while the sell order would be 52,000 units

So just like that the market crash?

Who's gonna fill a whales sell wall? And what's gonna happens if people can't fill a whales sell wall?
(I…

How do a whales operate & make profit?