The reason why promising coins experience particularly large fluctuations in the early stages is that major players and market makers come in to repeatedly trade and speculate. Since the market cap is small, it's easy to drive the price up and down. Everyone thinks the coin has potential—when the price rises, people are afraid of missing the opportunity to get in, so they buy; when the price drops sharply, people start doubting their own judgment and sell. This is also a normal phenomenon, because in the early stages, no one can be sure. Take a look at how SOL was in its first few years—it was the same way.