Why hasn't this wave of BTC lifted altcoins?

Overall, the cryptocurrency market still looks at Bitcoin. If Bitcoin doesn't strengthen, the sustainability of altcoin rallies remains to be seen; it can be understood as a rebound from overselling or as the main capital controlling the average price of chips.

Drop to the bottom waiting for Bitcoin → Bitcoin hasn't dropped yet → Bitcoin has dropped → Follow the drop → Bitcoin hasn't reached the bottom yet → Altcoins pull up a wave to recover prices while waiting. However, the noticeable increase yesterday gives the feeling that altcoin funds are a bit eager to move.