I think what seems like is happening that there are people in the know about some secret event or information that the public is not privy to. Perhaps if we did know than where those gains happen for some unknown altcoin, you would have bought it already. And you would also know before it getting dumped. how can I get in on this action?
No such thing as secret information. It's just that not all information will be known by you due to your activity limit as it's impossible you can't be always be updated at all happenings in the majority of those coins. There are coins that have a community so they are updated on some events on some coins and from there they can build speculation if will goes pump or dump.
Gaining profit in crypto is not as easy as 1,2,3 so erase the mindset that there's a thing called 100% prediction.
If by any means you become aggressive and really want to push for a service that provides signals, don't believe in those. Mostly, they are a scam.