This currency have a huge potential in the future and I know that there's something more about it. If you think that in the Q4 of 2017 is where it reached its all-time high, just wait and be patient because maybe it reached another all-time high. Bitcoin is very volatile and you should deal with that as you treat bitcoin as the best asset in the market..
Cryptocurrency was already well known in 2017 where the peak of the highest price at that time and then turned into useless after a lot of fraud that occurred in 2018 and make people no longer believe will make more money in cryptocurrency because on its basis to return people to trust investment in crypto is very difficult especially since they have experienced huge losses at that time.
But I am sure that in the future cryptocurrency will be brighter, maybe it could be due to mass adoption that continues to occur, but for prices like 2017 it is not certain anymore because the wave of fluctuations in the market is still rolling.