Bearish trend $€£

I'm pretty new to the Cryptocurrency market, I was feeling bullish with a portfolio of almost $700, my main assets are $BTC bitcoin,$ETH etherium, $SOL solana, $ADA Ada cardano,$DOGE doge and others, but today my portfolio dropped to less than $550. I don't know what the explanation for this will be, I think I'll wait for all the coins to rebound again. I appreciate your comments. Thanks.