Saying "borrow" is easy to understand. The actual situation is like this, because futures contracts have a date, which is the delivery date. In other words, if you are short, it is equivalent to signing a contract to deliver so many goods in a certain year and month, then all you have to do is take out the goods when delivering them. On the other hand, as long as there is no delivery date, it doesn't matter whether you have the goods on hand or not.

If you think the price is right, buy the same number of positions. Then you bought so many goods, so you have them on hand. The situation becomes that you sign the sales contract first, and then stock the goods, so that the two orders can be offset (hedged) without actual delivery.

The second question, whether to lose money depends on the specific transaction price.