Based upon your chart, 18k looks like it would be a heck of a buy signal, no?
I absorb some things through osmosis of being exposed to it over and over again. BTC price is one of them. 20K on BTC is a hard floor. It is a level of support I have not seen held in any other instrument for this long. I mean, this is an equity play. BTC has simply refused to stay under 20K, and is prancing that level. That 18K dip? Talk about a magnet to a support level, which is 20K.
If I traded BTC, I would have no compunction about buying in now. It may take a while for it to start rising again, but damn, that is a floor if I have ever seen one.