Brokers provide more information and features compared to exchanges. For instance, the latter category provides price charts, different cryptos, and features such as the stop limit orders.
The former category, on the other hand, has such charts in addition to in-built analysis tools.
Unlike exchange platforms, brokers allow their traders to open multiple charts in a single window, use additional extensions, and track the flow.
Also, exchanges are unregulated while brokers are regulated.
As such, the brokerage firms cannot carry out fraud, while exchange platforms can carry out crime unchecked.
Notably, cryptocurrencies are highly volatile in that the prices can rise or fall by a large margin over a short period. Presently, the value is dropping.