Here are the good exchange in my own opinion,
Binance, Kucoin, Bkex, Bitforex, Probit, Bittrex, and Houbi
and for the DEX such as follows Pancakeswap, Biswap, Poocoin,
Apeswap, Quickswap, Sokuswap and Uniswap.
These are all good to me and has nice volume as well too.