Might be wrong, not the first time, but BTC appears to be in final phase of a Wave A of ABC correction:-
coinbase datafeed and BTCUSD: high on 11 of november 69,000 low on 4 of december 42,333 so 38.67% drop There are many different lows and highs, depending on where you watch: here a screenshot with lowest at 49,204 and highest at 52,212. All this at the same moment.
Yup including Tradingview - what I used. Didn't check my TradeStation data because they unfortunately don't push thru weekend trade data its moot.
I have an idea. Next purchase to be in Bitcoins so that total holdings are 1 Bitcoin. Then accumulate another Cryptocurrency.