Iceberg orders, stop hunts, the list could go on. These are all tactics they use. Now the price is headed back up but without you onboard. There was a time when only nerds were buying BTC or maybe those who wanted to buy something on the Dark Web. However, now you're playing with big banks, whales, financial institutions. You gotta know the enemy. You gotta know their tactics. You can't fall for their tactics each and every time.
As Sun Tzu says in The Art of War:
“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”