I will never sell under 20k$, even if Bitcoin go to 100$ ...
The peoples who bought Bitcoin at 19k$, why you are selling them now ? You bought at 19k$ sell higher than that !
If you don't beleive at this technology do not buy anymore.
mostly selling on lower price is traders. they want to make less of their losses. its part of the trading method. though it is not affecting much to crypto holders. it will come back to its glory days.