Can I determine if my account is cloned

Check your device list to see if there is a device signed in that you don't recognize. You can remove the device using the steps in the article below. As a precaution, change your password.

Apple ID device list -Check to see where you‘re signed in.   * 

See who has access to your device or accounts

 Apple ID Password Change.   -  

ASC YouTube for How to reset your Apple ID password

 What to do after you change your Apple ID or password - Apple Support  -   I suggest doing this before you change your Apple ID or password.

Hello there,

Thank you for reaching out in Apple Support Communities. If we're understanding correctly, you'd like to know if there's a possible backup in iCloud that can be restored to an iPhone or an iPad. You can view and manage the iCloud backups by following these steps on an iOS device:

1. On your iPhone, iPad, or iPod touch, go to Settings > [your name] > iCloud.

2. Do one of the following:

- iOS 16, iPadOS 16, or later: Tap iCloud Backup.

- iOS 15, iPadOS 15, or earlier: Tap Manage Storage, then tap Backups.

You see the devices with iCloud Backup turned on.

3. To delete a backup, tap the name of a device, then tap Delete & Turn Off Backup (or Delete Backup).

That information is outlined here: View and manage iCloud device backups - Apple Support

If we misunderstood, please provide the community additional details of your inquiry. This way we can gain a better understanding and provide you the best support.

Kind regards.