It is not easy to use $10 to make $100 in trading, even if you gain and include the profit in the next trading or position your opened. One of the disadvantages of this is that once there is loss, it would be more because the profit is included. I see this as a way to greediness and a way to lose.
If you want to trade, you have to gain and set aside your profit, or you can set aside some of your profit which you will not be using for trading.
This kind of thing is intended for suicide, making money in trading is not easy for a beginner, except maybe using cunning or deceitful methods by taking advantage of loopholes in trading programs.
but it's true, from a capital of $ 10 to get a profit of $ 50+ or $ 100 is not an easy thing to do.
It should be yes, when a trade is profitable it is better to keep half of the profit and the other half to continue trading, it may be more effective to prevent losses when not making a profit while trading.
Having targets like that is good in trading so that we have certain limits and guard against greed when trading, but usually with small capital it is very difficult to get sizable profits, unless you do it in future trades.
For newbies, compounding a $10 crypto trading investment means reinvesting the profit from your initial $10 capital in the same asset, such as bitcoin, to generate an increase in returns over time. So the $10 may compound over time, and you can get $100 in returns. It requires patience, just as trading does.
This means to me that a new trader should always be patient and not be in a hurry to trade with big amounts. New traders should not borrow a huge amount of money to finance their trading because it can easily be lost. As a new trader, you should start small if you do not have enough money to start big. Even though it is not advisable to borrow funds to finance your trading, it is worse for a new trader to do so than an old trader. If you must borrow to trade, it has to be at a stage where you are very sure of your trading, that is of course after gathering experience. If you are a trader with no experience, avoid borrowing money to trade with.
Borrowing money for the first time trading is the stupidest thing, I agree with you that it will be really detrimental, even a person who has studied for more than 3 months is full of his own money, he does not find consistent profits from his trading, it's too risky if forced, don't think too easily about profits and don't take it easy to become a trader who can produce consistently.