Exchange wallets are not your wallets!
Unless you are a day trader and use your funds daily, you shouldn’t keep your assets on exchanges, especially centralized exchanges. If a hacker manages to break into the servers of an exchange or even successfully phishes an employee of an exchange, no one will be safe! So try to keep your assets in your wallets (cold ones are better) and only send them to an exchange when you want to sell or buy any other crypto asset.
there are many decent cold wallets out there like Ledger.com , Prokey.io , Trezor.io and etc. DYOR for wallets