I strongly advise you to keep money at least 20 to 30% of your portfolio. If you have very little money then don't buy.
You can sell if you can afford otherwise leave it as it is for long term. Never try to average because you never come out of loss eventually. Try new another stock if you want.
Finally, don't try to cover your losses by adding more stock. If you have little money don't buy now and see if it is deteriorating seriously then buy at that time. Trying to Makie money is not a wise idea at this time. Better to save our balance money instead of going into the burden.