I’m far from an expert, but here is my take. Speculative risk assets and tech stocks have also been down since Bitcoin is a “risk on” asset. There is uncertainty about the fed and if there will be a rate cut,I think December 10th is the next meeting. There was a lot of profit taking and there have been outflows from the Bitcoin ETFs. The drop below 100,000 and now below 90,000 were both psychological barriers, but then I again I was celebrating when it went above 80,000 last year.
FWIW I have not sold any of my “hard” bitcoin which is what’s in my hard wallets, but I began selling a lot of my Bitcoin ETFs and Bitcoin mining stock which is in my IRA. I sold about half of it, wish I had sold all of it, even so I’m up. I’m in it for the long game, Bitcoin is for my offspring. If it drops to mid 70s I will jump back in. It's interesting because the certified gurus who are on X and YouTube have opinions and predictions all over the place.