Yes, I also think that you shouldn't borrow, because it will almost always turn out badly for us, or if we lose we won't know what to do, or the interest for using the debt will be huge.
There are stories about how some people take money from their parents unnoticed so that they can give it back when they win, of course the story is like a movie script, only in real life it doesn't end with the credits from the movie. Usually they lose and don't know what to do. Or they have a plan for winning, but they don't make one for losing, and then they cry.
Maybe borrowing from someone you know like a friend or family member will not have any interest, but nowadays many people borrow money online and not just for gambling. In my environment, many people borrow money online and sometimes some of them are late in paying or cannot pay at all and it is clear that this type of loan has interest, so when they are late in paying or cannot pay, the interest can swell to be bigger and that will put extra pressure on them if they do not pay it off immediately and may make them stressed.
I myself have a principle not to borrow money if it is not because of an urgent situation.
In fact, all this shows how easy it is to find yourself in a difficult situation while making conscious actions, but you need to understand that only the player is responsible for this and no one else. Somehow he got the idea to play for money that is not his. Why did he stop, only because he wants to win back, but I want to say that you should never try to do this, this is what breaks our calm and planned life. In general, this all looks like consistent steps that do not need to be taken and our game will be clean and painless, at least so that later we will have to deal with problems for years, I personally do not want this. Therefore, I prefer to play calmly and without unnecessary rash actions.