Well I would prefer to trade Bitcoin than holding any altcoin now because it might get to where it won't be able to recover again. One needs to thread with caution so as not to lose heavily.
If Bitcoin moves sideways now that halving has been done, do you think altcoins won't spike up in price? Many altcoins dumped massively while BTC was on uptrend, especially in satoshi value. As for me, right now 60% of my portfolio will remain in BTC, while the remaining 40% will be in 3 altcoins. I already bought more ETH and BNB today, hoping for the best. Soon ETH 2.0 news should cause an uptrend for ETH everything being equal, just my opinion anyway.