BTG is a great project that offers an alternative for small miners to mine with GPUs, allowing everyone to participate in validating transactions. The developers behind BTG keep developing new stuff and their community is actually growing, they are very active in different social media. I have had BTG since they forked in October 2017  and I still keep them, it is true there was an issue with a hacker who scammed some people trying to retrieve BTG from the fork, but that does not blame the developers at all, in the cryptocurrency sphere everyone can be hacked, in facts most of the major coins and exchanges have been hacked and some point, all of them!  Regarding the price, of course, all cryptos are digital assets available in free markets, all coins including BTC has suffered a price decrease because of a correction, if you don't understand this you have to study more about market charts and fluctuations. Now that bear market has ended, the cycle starts over again. In my opinion, now is the best opportunity to invest in crypto. Do your own research, do not let anyone fool you with no sense comments.