The plunge of today was blamed on the Fed Powell anti-crypto comments but, this is simply not true. Comments from a centralized source against a decentralized source should be a good thing, not a bad thing. The real reason Bitcoin fell is because it is still playing within the flag. It could not break $11,000 and fell from there. As you see the flag forming, is as it should play out.
The only external influence that can impact crypto is if Western governments start banning bitcoin in America/Europe and halting exchanges. This would have an exceptional impact, but, as of now this doesn't look to be the case.