I have tried to sell tokens in the past which resulted in losing all that I had, I need more advice on best Exchanges for mostly all altcoins and how safer they are to use?
First thing you need to find out which exchange that listing the tokens that you want to sell on coinmarketcap. Usually the listed exchange are recommended, the best exchange so far is binance, because they have a good volume trading there. There are many good exchanges too though.