I want to disable TWO-FACTOR AUTHENTICATION

You can't disable it on an account you just created. You can only disable it on older accounts which were just updated.

From the article below. If it has been on longer than 2 weeks, you can't turn it off. 

Can I turn off two-factor authentication after I’ve turned it on?

If you already use two-factor authentication, you can no longer turn it off. Certain features in the latest versions of iOS and macOS require this extra level of security, which is designed to protect your information. If you recently updated your account, however, you can unenroll for a period of two weeks. Just open your enrollment confirmation email and click the link to return to your previous security settings. Keep in mind, this makes your account less secure and means that you can't use features that require a higher level of security.

Apple ID -Two-factor authentication.   *

cocomom1 wrote:

This two factor authentication is annoying and frustrating to this 80 yr old women. I like to play games on my I Pad. Turn this 2 factor thing off for good. Pashaw

Log your feedback with Apple: Product Feedback - Apple

I’m not sure why you’re even seeing two-factor authentication prompts here. Two-factor prompts are quite rare under normal operations. If you’re getting two-factor authentication prompts, there’s something authentication-relevant happening, such as passwords and maybe payments getting shared around, or maybe swapping around or reloading iPads or iPhones.

This two factor authentication is annoying and frustrating to this 80 yr old women. I like to play games on my I Pad. Turn this 2 factor thing off for good. Pashaw