One such issue is the question "Why is the sun shining?"
This is a market relationship.When supply is equal to demand, the price does not change, when supply falls, the price is rising.
Whales play games. And the price of bitcoin, unfortunately, reacts pretty hard.
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In my own observation with the price of Bitcoin fall down, I think it is because there's a plenty of supply in the market and the demand is low. FUD also contribute with the flactuation and some country which ban crypto.