Mainly, the cryptocurrency exchange should have a considerable number of users to get the liquidity for a particular trading pair. This is because when the number of users of the exchange increases, it will make more buyers and sellers.

The other way to have increased liquidity in an exchange is attracting market makers to the exchange by giving competitive trading fees for giving liquidity to the exchange.

Trading incentives for traders such as reduced fees and trading competitions also help to increase the liquidity.

Therefore, as an individual you cannot increase the volume of an exchange. It's up to the exchange to increase the liquidity by doing the tasks mentioned above.