Doesn't Bybit have some kind of Dex available? I think they call it Web3 or something.
I never heard of the ByBit dex, perhaps as you said, it's a web3 platform, but still a cex
A true dex is a smart contract running on the blockchain, open source and audited, with at least the required timelock for protection of user funds
Tokenomics incentives make sense for all participants, platforms
If not Bybit, what DeX have you been using? I would think the main thing is that there be enough other traders or market makers to keep the spread narrow.
I mentioned on another thread I use dex Apollo X, but I would not recommend it. I use it as it's perfect for my trading methodologies
The (gold) standard for dex perp futures is GMX. It's been forked I don't know how many times, for example, GNS Gains network on Arbitrum One and Mummy Finance MMY on Fantom
I recommend Gains network from my experience of using the platform , and I no longer own the GNS token so I'm not biased (anymore)

Gains network offers perpetual futures on stocks (not anymore) and gold and currencies (forex) not just cryptos. Absolute degeneracies
https://gains.trade/trading#BTC-USD
Here's a detailed article on dex perpetual futures
https://www.coingecko.com/learn/decentralized-derivatives-perpetual-future-dexs