what is the reason for such a sharp drop in trading volume on exchanges?
https://coinmarketcap.com/currencies/shield-xsh/#charts for the price everything is clear everywhere price fell but here the volume just fell to almost zero. it is very difficult to really buy or sell orders that are simply distant from reality.
It means few are now willing to sell at a lower price. It could also indicate that investors are holding for the long term. Most coins have dropped in price and trading volume. That's the nature of the bear market. Most coins are affected.