A guy once told me, altcoins generally do what bitcoin does, but to a larger extent.
So BTC goes up 10% --> Alts go up 20%
BTC goes down 10% --> Alts go down 20%
I will suggest you to go behind the new listings Coins as soon as Bitcoin dump because mostly new projects distribute a lot of thier supply in different promotion reward airdrop so after listing they faces huge dump but thier team try to generate green moves in order to attract new investor and make project more reliable, trusted and stabilized even Bitcoin goes down at that time and most of project bleeds but keep in mind mostly it work but sometimes it goes against you so be prepared for unexpected ancidents. DYOR
Someone told me to swap the profits for stablecoins. But stablecoins are currently under serious attack, and are at risk of getting depegged.
It's true that after Luna ancidents and some other people feel huge risk to swap thier fund to stable coin, I believe Bitcoin will always be beneficial for you as no matter how down it goes it will comeback and return you investment in double or triple so always choose Bitcoin for safe journey