I haven't seen any decentralized exchange that provides the information of trades and can track the record of transaction history and time. I am looking forward to that exchange which can provide blockchain explorer. Because it is difficult to identify the trading volume without having the blockchain explorer.
Trades on Bisq (a decentralized exchange) take place on-chain and are published here: https://bisq.network/markets/
I think many exchanges provide the history and time record of trades, yeah the question is there no completely decentralize exchange exist for now . Lets see can we have any decentralize exchange in future .