If you get a message like this when you log in, it’s referring to how you had an account already registered with Google using that email. Now you have a new kind of Google account with that same email address. Part of the confusion is that you can register any email as a “Personal Google account” – it doesn’t have to be a Gmail or a Google Workspace email account.
In other words, if you see this message it means you have a “personal Google Account” and a “Google Apps account” (now called a “Google Workspace account”) linked to the same email address.

1 – Google Workspace account An account owned by helloari.com
2 – Personal Google Account An account you created with Google
Learn more about “conflicting accounts“:
A conflicting account is a personal Google Account that was created using the email address of a Google Workspace account. A Google Workspace user could have two accounts with the same email address.
If you had old google account and now your email hosting is part of Google Workspace it asks when you login about a personal (or it might be considered a private account as opposed to a corporate Google Workspace account). Some might refer to this as a Google login in Workspace vs a Private account.
There is a way to combine to two accounts: see: support.google.com/a/answer/7062710
But it’s not required. You can just click on that first option “google workspace” and proceed.
This video explains in more detail: