An experienced trader, will not bother about the weather it is bull or bear, based on their investment and experience they will choose the right coins to make profits. Even though the market is dominated by a bear trend, it will help them to make a decent profit. That's how an experienced trader will make a profit whether it is a bull or bear.
They do bother.
It is not that they are the Aizen of trading, they are not earning every trend that is happening. They are also losing but they are experienced so they either earn a small profit or maybe reduced the loss that they have. Obviously, they can't just always earn a profit in every investment that they have, they will always lose but they have ways to reduce those since they are experienced.
