No, a big NO. it is definitely NOT safe to trade cryptocurrencies without enabling Two-Factor Authentication (2FA) authorization on your account.
Without 2FA, if a third-party gets your password, hacks your device, or compromises your computer, they can easily hurt your interest, such as changing your password, withdrawing your assets, or anything that suits their benefits.
Enabling 2FA adds an extra layer of protection and your digital assets will be secured without being accessed by bad actors.
To learn more, please visit - What is Two-Factor Authentication (2FA)?