First way to avoid getting scammed is to be Skeptical about everything, and unsolicited private messages or DMs should be treated with Skepticism hence if otherwise any dreams sold to you by anyone should not be bought, don't hesitate to leave such conversations that have too much of promise of returns to you.
I hope this helps someone today.
If every newbie can stick to learning cryptocurrency before intending to invest in any coin, we can generally minimize the risk of getting scammed by scammers, but I don’t think it is possible that way because most newbies coming into cryptocurrency are coming with the aim of making money as quick as possible, and that aim is the main reason they fall for scams because scammers will always give the good offers they can’t afford to miss out on.
Not replying or responding to unnecessary PMs in all social media, and avoid been greedy will really help, but when will our newbies stop all these? They can’t just stop until they get scammed and we can all testify it.