P.S. I would like to use a wallet base exchange not trading platform as they are so much expected to get hacked and or get there TOS change every now and then that give me useless anxieties 0.0
Most wallets, that am aware of, use third party services (like changelly and shapeshift) to exchange coins. So, using a wallet isn't any different from using an exchange.
Better use a p2p platform if you don't want to use a centralized trading platform.