I could tell people but I'm not obliged to influence them and take responsibility for their investment. I say this because I try to get in touch with someone and my experience is too bad as he came back and blamed me for losing their money after buying Bitcoin. I really don't know the story of why he lost as I don't talk to him back as he never listens to my explanations anymore.

Whether you believe me or not OP, please don't try to talk to people and encourage them to invest in Bitcoin as they will turn you back and blame you. You'd rather spend your time on yourselves rather than bringing someone to the crypto space, especially when we feel they are not interested in this.