The veteran people on crypto tend to say that you should keep your coins in your wallet, never on exchages. However if there is a strong downwards movement on a coin and you want to sell to buy latter at a cheaper price it may take quite a bit of time and fees to move it. What is the right strategy?
The right strategy is really dependent on what your expectations really are, if you are a long term holder you are not going to sell your coins just because the price is going down, so you do not need your coins in an exchange and so it is better to keep your coins in your wallet, but if you like to try to take advantage of the price movements you need to keep your coins in an exchange so you reduce your fees and you can take advantage of the price movements.