Some times, when offers are too good to be true, they probably really are too good to be true.
Just exercise caution and do extra checks.
When offers are too obvious scammy, don't proceed. Being aware of the current scam tactics will help you flee from these scammers.
Just make your own rules at cryptocurrency/internet, Its really simple example like this: "Don't trust anybody" & "Always using Escrow went doing OTC Transaction". I did these rules never got a scammed at cryptocurrency almost 2 years been here.
And don't talk to strangers when you're in such telegram channels. Someone will approach you with few talks and will definitely ask you something about investments. Setting up your own rule will help and I've been doing this as well.