So not just the bitcoin/ cryptocurrency market is experiencing sharp decline in value?
As revealed by 'The Economists' in a 2018 publication https://www.economist.com/finance-and-economics/2018/11/24/a-retreat-in-share-prices-finally-reaches-tech-stocks.... they pointed out that even the tech stocks of six major companies known as FAANG (Facebook, Amazon, Apple,Netflix, Google) have experienced sharp declines in value of their respective stocks due to retreats in global economy positions.

So it is obvious that even big tech stocks are  not immune to the receding global economy's position.

Nonetheless, from every available predictions the global economy would pick up from second quarter of 2019, we should expect that bitcoin would pick up. I would advise everyone to take advantage of this period and make more investments in bitcoin now.