I get what normal ETFs are. But what the heck is a futures ETF? Cuz futures are just bets on where the price of something is going to be in a certain amount of time. So they are usually short term price bets, rather than actually investing in something. In futures you specify a price for the end of your bet right? So how does a futures ETF work? How does an ETF take into account the short term nature of futures and the bets on different prices?

And why would anyone want to buy a futures ETF? I get owning bitcoin, I get having a bitcoin etf for people who want to invest but don't understand the real point of bitcoin so don't want to deal with actually owning their bitcoin but just using it as an investment, and I get futures where you can make short term bets on your price prediction as an alternative to just trading it, but whats the point of a futures ETF?