the bear market is still attached to Altcoin but that's it will not have a bad impact on Bitcoin because the that is controlling prices on the market is Bitcoin.
I think you are confusing between cause and effect. The bear market is not dependent on any coin specifically. It is dependent on the market psychology of whether people want to pull out of crypto and pump into it. While it might be true that certain stances taken by different countries and organizations have made things bitter for the market there is still investors holding on to their coins.
just the opposite if Bitcoin is in the bear market then Altcoin will also suffer, I think Altcoin is currently still dependending on the price of Bitcoin and I don't know when Altcoin can have its own dump and pump.
That is a popular argument. But altcoins as you all understand by now are not having anything new to give to the community than what bitcoin has. Every new altcoin is a money making method for its devs and not the investors. They dump it and move on. So be cautious what you invest in.