It is easy for bitcoin to rise to its current price of $98,500, and it is certainly easy for bitcoin to crash to $50,000. In 2017 bitcoin fell about 80% and in 2021 bitcoin also fell about 50%. That is how high the fluctuation of bitcoin is, anything can happen easily. If the price of bitcoin drops to $50,000, it is certainly the right time to buy, and do not let it pass.
Nothing is impossible; it has happened in the past for the price to drop below 50% from its ATH, but currently I think the market reacts differently from how it does in the past. People now have a strong spirit to hold and withstand some kind of market pressure without panic selling, which could have helped push the price down by that level. I'm not saying it's not possible for such to happen, but it will take time before the price will just drop down from $90k to $50k; it will take weeks and months and not just a few days.