how to change for two Two-factor authentication option

Change to two factor authentication as outlined in this article --> Two-factor authentication for Apple ID - Apple Support Follow the instructions in the section "Turn on two-factor authentication for your Apple ID"

Once you’re all setup, suggest that you carefully read - digest - and Re-Read this additional article:

Get a verification code and sign in with two-factor authentication - Apple Support

Pay particular attention to intelligently selecting and setting-up your “Trusted Numbers.”

A solid understanding of 2FA’s “workings” is essential knowledge BEFORE a “device disaster” occurs.