Not every rich people made returns from their every investments, I read somewhere the best ever and most successful investor of all time who is Warren Buffett even have the success rate of 6 or 7 out of 10 means you can still lose no matter how good your investment plan is. Never borrow money to invest, just make money and start investing. Life is simple but don't complicate it with things which you can't actually control.
Borrowing money to invest I think it's like gambling and it's really not recommended,
need really mature consideration to make that decision and it's not easy for sure,
investing still has risks so if we borrow money for it I think it only makes the risk bigger