Bitcoin under pressure as looming concerns about upcoming tariffs and strong core PCE data impact investor sentiment.Bitcoin risks concluding its worst quarter since 2018 and may drop below the $80,000 threshold by end of March.Bitcoin's recent steep dive leads to over $90.6 million in liquidations, putting it on course for its worst Q1 since 2018.Market participation cools down as open interest in Bitcoin drops by 4.5% and the long/short ratio signals a bearish shift.