Its your own decision. You know that cryptos are risky term of investments and you already know the possibility of lossing investments. In the first place, why did you bought bitcoin at that price? Because you are thinking of gaining more because of the high potential of bitcoin. So, its much better to strategize in the future. This is a normal scenario in the market, you have the power to decide for your own. Its ok to blame something because you loss a lot but dont keep it too long and just continue.