Bitcoin futures?

Not sure about how bitcoin futures can work, it seems the case there's not shorts. Is it supposed to work just by betting on higher targets? Wouldn't that be a self-fulfilling prophecy? A trade with just one side? Do I make sense? I know nothing of finance and economy...

Banking, futures... they tend to stink of manipulation... sure they want a piece of that BTC action!
Being a neophyte to cryptos (Still love metals though) I felt the Futures in #BTC are a stormy and dark cloud on the horizon.

So I sold some of my BTC earnings and bought $500 worth of #ADA, #WAVES and #XVG... will it pay off? I really don't know but it just felt wrong to keep all my earnings in BTC, holding and never selling especially after the effects of the futures SEEMED to slow down the rise... I could be wrong what do I know? But I do follow @marketreport Greg seems to know his stuff AKA "Robinhood of Wallstreet"

Cheers from Costa Rica