My cousin who in time i asked to investment on bitcoin but has always had excuses that he'll invest later, sometimes he tells me that he's afraid to invest his money on the bitcoin due to the potential losses.
You should let him know that there is potential wins as well for this one. There's always going to be a risk with investing and you should risk what you can afford to lose.
He had aslo told me that he's contented with his monthly salaries at then but now he has fall back to me that he's ready to invest because he has lost his job and it's becoming tough for him to meet up with his financial requirements.
He is contented with the salary but he lost his job. That's a terrible experience for sure. If he is worried too much about that, then maybe it's really not good to let him invest. Don't push the person if he doesn't want to. I don't think he would like it as well if he is going to invest in crypto because he might be thinking about it too much and cause some problems physically or something.