A lot of time they skip the pump and dump and just have you invest through really cleverly disguised fake exchanges and take the money outright.
The modern "pig slaughtering" scams are insanely involved, sometimes going months before the actual scam hits.
They hit people when they are lonely, and then usually invest a lot of time to convince the victims that they do know each other. Brings the guard down.
The big new innovation is that they don't try to get the victim to send the money to them. Usually they talk about how successful their investments have been and try to get the victim to join the scheme, but it's either a fake crypto exchange or some other type of scheme.
It's wild how effective they can be. I've even heard account's of them getting money put of cybersecurity professionals.
Stay safe out there.