Trade is a good way to increase your portfolio but in you are in huge losses, holding is the best strategy i think. I hold my coins that are purchased at a high rate and try to buy in low rate to trade and cover losses from the first losses.
You can trade to cover your losses, but it requires more ability to trade when market conditions like this are not very good. I try to keep the assets that I have, because I believe there will be an increase so I buy some more assets with lower prices. not for me to trade but for me to hold.