Bitcoin may drop even to 4,5k or lower but i dont think its a reason to be scared. It will be just another opportunity to buy it cheap. Longer we will be in bear market higher we will bounce.
When the ETF was denied many were expecting a negative response of the market and nothing happened so I doubt we are going to see a price of 4500, I am a long term holder so if that happened I will try to take advantage of the low price but I simply do not see bitcoin reaching a price that low.
What I see is bitcoin more or less doing what it has been doing for the last months, it is going to move in a very narrow band for a long time with some small upward movements that people will misinterpret as a new bull run only to be proven wrong, since it is likely the bull market will not appear until 2019 or even 2020.