You might be able to make money when trading shitcoins or memecoins, but it is something SO unpredictable, full of rugpulls and scammers, that I do not think that it is worth it. Maybe you can gamble using a very small percentage of your money.
I still believe in Bitcoin, and hope I will keep believing
That's the key, the word unpredictable and as well as uncertain.
While those that have been experts of it, let's say that because many of the altcoin investors knew what they are up to. And even so, I don't think that they are ignoring the fact of investing in Bitcoin.
It is something that they won't just let it pass. I believe that most of them are wise that they're converting their altcoin profits into Bitcoin and are only waiting for a probable dip.
Other than that, they're holding a huge part of their portfolio are in altcoins but they have got plans of converting that as well and leaning to their holdings mostly to hold more Bitcoins.