i think the reason why the most coins decreased is as i search and see is whenever the bitcoin is going down automatically also altcoins are bad at their prices i think because it is the main one and for that reason it happens.
In general, the money market is now dependent on bears and whales, as they invest in the market, the price of coins is always growing, and as they exit the market, prices are always down. So do not dream and predict when the market will increase. It is very difficult to know.