which I see is like that. and I think that's how it works. how to keep the market stable. I think bitcoin also has a continuity between other altcoins. but that's just my perception
This market is not stable, it is highly volatile. If you mean stable by which follows the same pattern as before, then I agree with you.
This is perfectly normal, it is within the usual trend. This is all likely thanks to the limited overall amount of cap for the whole market.
And when insufficiency is experienced in the market, most of altcoin assets would flow to bitcoin and eth, the relatively stable ones, then goes back to other end again.
Most altcoins, if not all, are reliant to bitcoin.