Good exchange is safe, and the welfare of their users comes first. Good exchange is the one with good offers that will really inspire their users to continue with them. Can be user-friendly. Friendly in a way of trading and investing in cryptocurrencies. It must be reliable because it is needed when it comes to transactions and trading.
Another example of a good exchange for me is kucoin. Because everything I mentioned is characteristic of it. Plus, they have many trading pairs that you can use to trade. Like in BTC, they have BTC-USDT and likewise in ETH, they have ETH-BTC