Bitcoin is still the most popular cryptocurrency. The hype just begun when the price hits about 20k, but when the price went down to 10k many people are just disappointed and many switch to altcoins. As for the price stability, all cryptocurrency has a volatile price, so you cant expect it to be stable. For me, bitcoin is still the best coin that will give you more profit, its price now is our chance to accumulate more. Let's just be patient and it will surely go back to 20k this year.