If anyone is planning to take loan to invest in bitcoin, then they are suppose to have a source of income which can be used to pay back the loan which they took, but if anyone is expecting to use the profits which they make from bitcoin investment to pay back their loan, then that’s completely wrong. If you are taking a loan, there will be interest on the loan, and definitely there will be a pay back time.
Normally, taking a loan to invest in bitcoin is risky even if you have a source of income because when you take a loan, it comes with an agreement of when to pay back which means you will be putting yourself under pressure to pay back when the loan is due and what if by that time your income didn't arrive or it did arrive and you used it to attend to an emergency situation, it then means that the lender will start demanding for a pay back of the loan which might make you reason that the only way out will be to sell part of your bitcoins to settle the lender which will be a bad practice because even when the only option left is to sell your bitcoins, it may come up at a time when the price is down and you sell at lost. Just invest with any amount that is available for use and forget about going extra length to sort out money to invest, what you will only work towards is how to increase your income so that it will enable you to have enough discretionary income to invest more aggressively.