bitcoin hit at $19200. from some predictions that I saw, bitcoin will reach $20.000 by the end of this year. and will be even higher in 2021. So in my opinion this is only a small part of the price drop. and will return at a higher price. if the investor buys at $20.000 then he survives by making a trade in the BTC pair. and it will recover their funds.
Have you checked the latest chart in its market value? If not, there is a downward movement in its price as well as to ETH and other alts. Some say this is the correction already just like before and some are still holding with the idea of recovery for this year. So to invest at this moment or not, depends on your analysis as an investor. You may consider doing so but you may also wait for the price to again be cheaper in order to invest in a bigger amount to be held until recovery again occurs.