Nobody knows for sure. We have predictions of every kinds on the internet regards Bitcoin next movements, but it's fairly safe to say that nowadays there are much less pessimism over Bitcoin than we had in previous years. Nowadays most news and predictions are optimistic about Bitcoin's future, especially right now that we are in a bullish market, which has potential to drive Bitcoin to a new ATH in the upcoming months.

Yes, Bitcoin rules crypto market in every directions. If Bitcoin loses demand, the whole crypto market suffers, and when Bitcoin pumps, crypto market pumps as well. There isn't profit in crypto market when investing in altcoins if Bitcoin isn't doing well on the present time. The whole market relies on Bitcoin to thrive and survive. Without Bitcoin, this market wouldn't have the same reputation and confidence from investors.