look at the trend that has taken place over the past few weeks, bitcoin is moving around $ 9K, has broken into $ 10K, but not long after, it was back down.
the possibility of going down to $ 8K will always be possible for bitcoin, because the right time to increase bitcoin has not been seen until now. the expected upward momentum has not been seen at all, namely breaking through $ 10K and continuing to be around that number for a long time.
then it can be ascertained that if there is such momentum slowly bitcoin will move up until the end of the year, even if you look at the halving of the last significant increase only a year later. then maybe in 2021 bitcoin will experience a fantastic increase over 2017 can happen.