This proves that even experts can be wrong, trading does not always produce profits and sometimes we will also experience losses even if this also applies to experts. My advice about whether you sell or hold, it's better for me to hold it because some issues regarding the end of the year are bullish, just wait until the end of the year, even if there is no bull sign then it's up to you want to sell or not.
I think this crypto is not famous and anonymous currencies cannot make their place in the market. It is better to sell such coins which receive no funding. Such coins are mostly scam and took the money of innocent people. It is better to put your money in some reliable and authentic and exchange listed currency, so that you will be mentally relaxed with your investment.