Shorting means selling at the current running price and then buying back at a lower price, here it is actually same as buy low sell high just the order is reversed. Shorting needs to be correctly timed otherwise if the market turns around in the middle of the two trades, you will end up in a loss and a bad position.
That shorting of "assume I have it right now without me having it, and I will pay for it later" is the root of all the problems in the crypto world. I mean that makes it profitable to drop the price of bitcoin and people think that it is somehow okay.
I find it the root of all our problems, there are so many rich people see the price going up too much and start to sell it and short it at the same time and make a ton of profit and that is not an easy thing to overcome when you are going against organized whales, hence we keep on being worse than we should be, all because they believe that they could make a huge profit by shorting, if there was no shorting available, we wouldn't drop like this, we would drop, but not like this.