for me personally I would avoid that, because I know that investing in crypto is very risky at any time you can lose money if you place the wrong coin on, besides that coin price movements can change at any time and you can lose everything. it is not recommended to borrow money in any form just for crypto.
But sadly, there are those people that are taking this shortcut and borrows money to invest in crypto including bitcoin. We know how risky it is and they have to be aware of that. Still, they seem to have no one to stop them because they won't stop until they experience how it's risky to use borrowed money for investing in cryptocurrencies. Just don't take any loan or borrow money from your relatives just for you to invest in cryptocurrencies because you might get into trouble with your loved ones because of that money.