[plsbenice34]

There are several models.

Haveno already works by providing p2p multisignature escrow. With this design, you need to match with an individual and do a direct exchange. There is a Tor-based application

BasicSwap has another model with noncustodial atomic swaps and some sort of decentralised orderbook.

I expect that Serai will be much more effective than those. It will launch soon with a liquidity pool design, similar to Uniswap for Ethereum. With this model, other people can profit by providing liquidity for pools. It will be very easy for anyone to initiate a trade and do an exchange for a different currency from the pool. It will be incorporated into the most popular mobile app Cakewallet, so it should be accessible even for non-technical users and quickly gain adoption. I think this has the potential to provide an even more convenient, generally superior experience compared to centralised exchanges.