What I'm looking for is something simple, an exchange that's decentralized or at least doesn't require KYC verification, is reliable, and I can easily exchange Bitcoin into stablecoins? Is there a decentralized exchange that does this?
If what you mean or looking for is the ability to exchange the L1 bitcoin to a stable through a fully decentralized exchange, then I honestly do not think such exist, and it's because until the arrival of ordinals, it's impossible to build smart contracts on bitcoin L1 blockchain, and we all know that decentralized exchanges only function as smart contracts built and is running on the blockchain.
The only way to be able to convert bitcoin to stablecoin through decentralized exchange if you would first convert your bitcoin to wrapped bitcoin on any other blockchain like Binance smart chain, ethereum, Solana and so on, then you can use decentralized exchanges on any of this blockchain to easily switch or shift from wbtc to stable coin and vise versa.
Edit: contrary from what I said above, I think I remember that it is actually possible to convert native bitcoin to any supported stable coins on
dapp.chainge.finance, I've actually used this Dex exchange a couple of time, but it's been a while so I forgot, you can give it a try.