A simple and straightforward answer is you don't have money like Whales.
Reality & Explainantion
Bro as I said above we don't own so much amount of money there are some other reasons as well bro, Do you really think whales go all in the bitcoin or any other asset for an investment opportunity. As we people own limited resources and we don't want to risk it, this is where we are wrong but responsibilities are forcing us to do this. Whales own money + they risk with diversity. Our mindset also plays an important role in this process.
I highly agree, we cannot act or pretend to act as one (whale) if we don't have the financial capability since the term whales means the one who has huge amount of shares of the market and possibly have deeper pocket than OP anticipated. So even with our knowledge about how the whale act, we cannot do it. Just like whales feasting on group of minnows, minnows cannot feast on group of minnows. Minnows can only settle on small profits and can participate via small buy and sells that can hardly affect the market.