Several cryptocurrency ETFs in the US stock market can basically replace contracts without the worry of being manipulated.
1. Double short BTC code BTCZ
2. Double long ETH code ETHU
3. Double long Coinbase code CONL
4. Double long MicroStrategy code MSTX
5. Double short MicroStrategy code MSTZ
It appears to be 2x, but with the financing from the brokerage, it can reach 4-5x, making it no different from trading contracts on exchanges.
The advantage is that it won't be maliciously manipulated into liquidation, and the so-called contract liquidation fees are just money wasted.
It is also traded 24 hours, but the downside is that the market is closed on Saturdays and Sundays.