It is not necessary to change Bitcoin to alts, it is always profitable to keep Bitcoin in your wallet, and then, if there is money, you can choose and invest in alts.
That's right, it's better to save your 1 bitcoin than break it up with several altcoins, because the increase in bitcoin is greater than altcoin and altcoin takes a long time the price goes up, if you want to buy altcoin it's better to use other funds