There's one mistake many people make when a newly crypto coin is listed and they want to sell. If you want to trade your coin for USDT when it's listed on an exchange, don't use “Market” price option to sell. Some people call certain exchanges scammers because they used market price and their coin was sold at a very low price compared to the trading amount at that time. The issue is that a newly listed coin will have high volatility, so even if it's trading at $1, using a market sell might fill at $0.5 instantly. Sometimes there's a flash dip, and your market sell order will execute at the bottom, leaving you at a loss. Use a “limit” sell order; you can set the price or just use the current price, which should fill. If it doesn't and you need to sell quickly, cancel and retry at the current price.