Well as you can see the dip seems to be over now, and although this was a big correction, it wasn't the largest one bitcoin had, not even the longest one.
Check this image to have an idea:
As you can see there, we had plenty of corrections like this one, and two big ones on 2013. The volatility will not disappear any time soon in crypto markets, so you will probably get more corrections like this in the future. It all depends on how the market grows, and normally the crypto markets have huge unsustainable growths followed by big dips, because they are highly speculative and influenced by fud and fomo. The questions you always need to ask yourself are the following: Did the fundamentals changed? Did development stopped?
Bitcoin dev team did not stop working on bitcoin, and the fundamentals are the same, so there is no reason for alarm, and if you believed in bitcoin when it was at $20k, you must still believe in it now, and the same thing goes for a lot of other coins.