how to deactivate AirTag connected to strangers Apple ID

Hi aliv88,

Let's follow the steps below to remove the AirTag from Find My, then reset your AirTag which should help: Remove an AirTag or other item from Find My on iPhone - Apple Support

"Remove an AirTag or other item from Find My on iPhone

You can use the Find My app  to remove an AirTag or third-party item from your Apple ID so someone else can register it.

Learn how to register an AirTag or third-party item.

1. Tap Items at the bottom of the screen, then tap the item you want to remove.
2. Bring the item near your iPhone.
3. If the item is not near your device, you can still remove it from your account. However, the item must be reset before anyone can register it to their Apple ID.
4. Tap Remove Item, then follow the onscreen instructions.

Note: Follow the manufacturer’s instructions to reset an item. For an AirTag, see the Apple Support article How to reset your AirTag."

Need more help, Contact Apple for support and service

Cheers.

You are welcome aliv88.

In the article we shared earlier, How to reset your AirTag, it does show the following, "An AirTag can be associated with one Apple ID. If you want to use an AirTag that someone else has used, they need to remove the AirTag from their Apple ID first. If the previous user removed the AirTag from their Apple ID but they were out of Bluetooth range of the AirTag, then you need to reset it before you can use it with your devices."

If you know the person whose Apple ID is associated with the AirTag, and they have removed it from their account, then you will need to follow the steps for resetting it. Otherwise, if it's still linked with the other persons Apple ID you will not be able to reset it.

Take care!