I have a friend who invests in cryptocurrency like me, he is an investor hold Luna and he has also lost quite a bit because of Luna. But what's more sad is his 2 best friends. Those two are also hold a lot of Luna's and Luna's crash causes them to lose all their possessions and become insane. As he said, one person has gone through the crisis and one has not. Those two guys who invested in Luna were all from my friend's advice. He said it was he who indirectly harmed them, money can be earned, but his friend are gone.
This is a sad story that I have heard. Through this story I want everyone to know 1 golden rule in investing is: never give financial advice to anyone. By the time you give them financial advice, you may feel like you're one step ahead of them, but if that advice is wrong, you could be the one hurting them.
Informing / alerting the concern with risk involved as well, will alert him / her to think twice before he pitches in. But yes there are situations when a friend sees his friend gaining profits from a coin, he / she will tend to invest on the same coin confidently requesting his friend to get him the coins in his / her wallet. As he / she is new to the platform, he / she will go through beginning crisis with lots of losses but will yes certainly will learn and gain profits.