Only expert traders should do something like that, a newbie trader will not really improve by much their ability to make more money from the markets while they will increase their risk many times over, making it a bad decision no matter how much I think about it.
It's not really advisable for newbies.
If there's no reason to take a loan then you better don't do it because that will just push you more down and you'll just get some debt that you may not like the result of it.
There is no problem if you really need money and you think loaning them is the answer and you'll eventually pay it with interest because you have a stable income. If that's the situation, that's good but if not, you better not initiate taking a loan.
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^ Definitely right and I agree on this, I rather sell my collateral if I have it than take a loan, you will pay the percentage interest of your loan while you have collateral that could be used to sell if you really badly need money. Taking such a loan on that kind of profit it seems you used them to have their profit from you, you will pay interest and the fee of sending your collateral.
It is better if you will take a loan using fiat because it is stable.