A lots of people have expected bitcoin to reach all time highs for some reasons the market has been declining at $19K, Market have retested this levels for so many times, I personal think it is has failed and it time to sell
If you look at the chart above the resistance level is $19k which is mostly likely to push the price back to $16K However some indicators are still showing the buy signal, you should sell at your own risk this is not a financial advise