Bitcoin as a market is not efficient: on large exchanges (Coinbase, Kraken) you have a lot of retail players; on the smaller exchanges, volume numbers are inflated, often using trading bots; the futures marketplace of CME and CBOE have limited volumes and very large orders take place via OTC trades that aren't always reflected on time. FUD and FOMO drive the price for BTC, which is why I trade based on momentum, basically buy strength and sell weakness.
Using Moving Average Convergence Divergence analysis on BTC may seem simplistic, but for a retail trader like myself, I don't really need more than that;
(this is not investment advice)