From what I understand of your question, you're talking about altcoins that haven't recovered like Bitcoin has, right?
If that's the case, the altcoins market is like that, it has a lot more risk and more return, they go up a lot, even more than Bitcoin, but when the fall comes, it's usually strong and many altcoins don't recover and can be almost “forgotten” for a long time
Bitcoin is a safe haven, I only recommend venturing into altcoins if you know what you're doing and don't follow too many influencers
Some altcoins have fallen 50% for example and haven't recovered while BTC is at almost 100k again