Like Stalker22 said, peer to peer coinjoins are a better option for what you are asking for. There are three different implementations that are the most used; JoinMarket, Whirlpool, and WabiSabi. Out of those, JoinMarket is the only truly decentralized one because it doesn’t rely on a central coordinator. The others I would consider trust minimized and noncustodial. WabiSabi, which is adopted by Wasabi and Ginger wallets is easier to use for the average user. You can decide what implementation is most suitable for your needs.