If you want, you can read the Apple articles below to keep your Apple ID account secure, see the following Apple articles:
If you think your Apple ID has been compromised
If you think your Apple ID has been compromised - Apple Support
See who has access to your device or accounts
See who has access to your iPhone or iPad – Apple Support (UK)
Delete suspicious content from your devices
Delete suspicious content from your devices – Apple Support (UK)
Check your Apple ID device list to see where you're signed in
Check your Apple ID device list to find where you're signed in - Apple Support
- if you see devices that don't belong to you, delete from your account.
Personal Safety User Guide -> Personal Safety User Guide – Apple Support (UK)
Manage and use your Apple ID -> Manage and use your Apple ID – Apple Support (UK)
(if you haven't already done this) Two-factor authentication for Apple ID -> Two-factor authentication for Apple ID - Apple Support
-----
Thank you for your feedback and you're welcome.