For storing Bitcoin long term, it is recommended to store in a paper or hardware wallet. It is not so safe to store in exchanges and online wallets. The reason is because you dont control the private key account. If anything happen to the exchanges or online wallet, you will lose your coins. Better be safe than sorry.
thanks for the suggestion, yes i agree with the save in the paper or hardware wallet, but is it later when there is damage in this wallet is there any way to overcome it? because the paper is more vulnerable damaged .. please advice again Thanks