The price dropped to $3k last year when ~all financial asset prices were crashing due to panic over covid.
I do not believe the price crash was as a result of Covid-19, it was still during Covid-19 the price also increased to $10000 before it decrease to $8200 before halving in May. I did not know what also caused March 2019 (not only March 2020) Bitcoin price crash, Bitcoin decreased to $3800 in 2019 and likely decreased to $3800 in 2020 until the whole thing change after halving.