The reason why nobody lends any money to traders is because since they are asking for a loan means they don’t know how to trade. Since they don’t know how to trade they will lose that money and won’t pay you back.
As funny as this sounds, it is accurate because it is humanly expected that when one request a loan to start a trade, it should start making profit after the launch.
Most businesses mostly those involving trade, might take time to mature and start yielding profit. This is however not thought about.
Also there's the case of if the trader has done any business or trade before or has done a similar line of trading before this.
For those who think to take out a loan and start a business or trade is practical, keep in mind the duration to payback, because within this time, so many factors and variables will be at play.
The other alternatives may include one getting a job or part time hustle to save up for a duration.
Could make a formal plan on how to succeed in the trade, incase a likely loaner who might be a friend decides to help.
Ask yourself if you have collateral equivalent incase the loan can't be easily paid back.
Try loan apps or join a group cooperative where the members know themselves and contribute a certain quota to help themselves incase such need arises.