Why are all cryptocurrencies soaring these days? Does anyone know the inside story? 
That is the movement of bitcoin and the market. Do you want the market to always be bearish? The financial market has only two directions: up and down, so you don't need to be surprised when it starts to increase after many days of decline. This is also proof that just by actively accumulating bitcoin, bitcoin will bring you sweet results. I have been accumulating since last year so far and my portfolio has had pretty good returns but I won't be in a rush to sell it all anytime soon as I believe bitcoin will take me to the next level.
The price fluctuating or skyrocketing is what is expected mostly as the rumours about the BTC ETF only ended as a rumour and as the halving is some months shy of six, is going to happen.
The best bet is to find a good spot and trade at a margin possibly to avoid losing more, and keeping some aside in a secure wallet is ones investment in the future if BTC and cryptocurrencies in general.