I don't think borrow from the banks or other people will be a good idea to buy cryptocurrency because we don't know what exactly will happen in the market. Besides that, we need to think about how long we should pay the money to the banks. The market still cannot predict and if you cannot make a profit and get lost, then how you can pay your loan. That is too risky, but if you think that you can handle that thing, then you can try to borrow and hope that after you buy any coin, the price can increase so you can make a profit.