I want to turn off two factor authorization, my password alone is OK by me.

From https://support.apple.com/en-us/HT204915

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, you can unenroll within two weeks of enrollment. 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 higher security.

Note that certain Apple services require 2FA with your AppleID to use them. If you are within your 14 day trial period and turn it off, you will not be able to use at least the following:

iCloud keychain

messages in iCloud

Home Kit

Apple Pay