BTC in trouble at 20K?

BTC hanging on at a key 20K level.
Bear market so far for BTC has represented several bear flag patterns.
Will the one we're currently in resolve to the downside also?
My bet would be yes, looking at the OBV indicator that traces real time sell and buy volume, troubles to get over a level it has used as support previously - suggesting that selling volume is dominating over buying volume.
Bear flag target would be in mid 12K's.
Where we will be wrong? My guess would be when daily OBV takes hold of higher levels, preferably above the line I have marked on the chart.
BTCUSDChart PatternsTechnical IndicatorsTrend Analysis

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