I believe one of the main reasons Bitcoin crashed is because of a lot of interference of noobs who took it as a money doubling tripling scheme. Bitcoin isn't really made for that.theres a limit to total number of max Bitcoins that can be mined and also to the number of transactions because of our limited computing power.
Will it rise back??
Well I believe yes if not sooner then a bit late but it will coz blockchain is future. The next 4-10 years Bitcoin is going to do miracles