What you stated is the harsh reality that everyone in the crypto space should acknowledge. While Bitcoin may experience price declines and then increase back, we can't be certain that many altcoins will return to their ATH. This is a puzzle that remains unsolved.
I’ve realized that many investors may end up losing money on their altcoin investments simply because they are waiting for their altcoins to reach ATH again, which may never happen. This situation could be devastating for those who are hoping for substantial profits from their altcoin investments only to find themselves facing significant losses.
Yep the example is me, my altcoins still not recovering even though Bitcoin and big market cap altcoins are making new ATH, but the good thing is I only invest little amount in altcoins.
However, currently altcoins price are rising and my coins also rising too, but I choose to hold, until it's back to the price which I bought before. Dunno how long it will take.