I think one of the causes is the effect of trade war between China and America
and also the global economy is weak
dollar trade wars been going on for decades, centuries even, weak economy been going on since 2008... come on atleast try a bit better and stay relevant to this year
how about all those futures options that expired last year, people put into another yearly contract which they are now closing those contracts.(meaning something relevant to the last 12 months)
how about all those hashrate chatter causing people to panic because its not supporting a good bottom floor value line support(2 month floor puts btc at a ~$7k cost to mine).. in short the $10k price was inflated/bubble and not 'good value'
how about people now trying to register with brokers to use things like bakkt instead of buying direct thus less buyers and more sellers on the exchanges.
anyways. if you want to stick to the decade view of causes, here is the best one.
bitcoin has and will always be volatile like a stormy sea. with waves going up and down. dont expect a perpetual tidal wave growing constantly bigger and bigger. dont expect smooth sailing. always expect ups and downs
All of these factors you said are true. Volatility is the main problem of Bitcoin, so it is okay to see such a fall in a short period of time. The trade war also slightly affected the fall of Bitcoin. But, i have one question: Is this Bitcoin`s drop critical or not? As for me, it seems like the end of the bull market and the beginning of the bear market and Bitcoin will not be able to recover and get undressed to at least 10k now.