Covid19 did indeed trigger the price drop. It wasn't only bitcoin though. Stocks and even gold went down last month.
Strangely, Gold is going for a new ATH now while btc isn't doing that great.
Gold seems to keep riding upwards, in this event where pandemic virus already affects everything mostly the economy only gold still standing and rising
high, in the side of crypto, bitcoin fell when covid-19 spread out the chance that investors and traders panics and secure their livelihood.
In this moment bitcoin is moving up together with alts, not that high but much better than nothing.