Besides the points to protect the security of the wallet above such as Strong password, 2FA, and Seed or passphrase, I would like to add, don't use a new web wallet whose reputation is not yet known, because I've used a web wallet, but after a year it has been down or closed, Don't store large amounts of Bitcoin in hot wallets, use hot wallets only for daily transactions, don't trust messages from e-mails, and don't forget to inherit, private keys and passwords to beloved family parents, siblings or children, because we don't know what will happen tomorrow with us.