Here is the current spike (blue) overlaid with the Dec 2013 and Dec 2018 peaks. The current spike has slightly more peaks than the two previous ones which are very similar. If the market follows 2013, there is a chance to exit around 55k before a long slide back to about $22,700. Otherwise its the 2018 model which drops to about $14,000.
Bitcoin has routinely given up 80% of its value, it is not like any other asset.