Avoid ending up like a friend, who used all the money he has to invest in bitcoin and also took a loan, promising the lender that he will pay back when he gets paid in a month, after a month he never received the salary, I warned him doing this, because he has no doubt mixed investment with 'whatever it takes', is it safe to call this greed? I don't know.
Now he wants me to lend him some money to at least pay the loaner back and later settle me, there is more, now I have to send him some money to buy some food.
You don't have to use all your money to invest, even if you are not married yet or have other responsibilities, the best approach when planning to invest in Bitcoin is to buy with some percentage of the money you earning, maybe through business or a job.
If you do this weekly or monthly you won't feel any pressure, always remember that health is wealth.
Yes, in my opinion, your friend did something rash.
He is wrong if he thinks that bitcoin can rise significantly in price suddenly in 1 month in a bear market. It's possible, but unlikely.
However, it is possible that this story will have a happy ending. Yes, given the current situation, your friend will have a hard time. However, bitcoin is a very promising deflationary asset. The price of bitcoin will certainly increase significantly in the future.
If your friend manages to solve current problems, such as finding a part-time job to pay off a loan and pay current expenses, then in the future he can hit a big jackpot when the price of bitcoin reaches a new high.