Subdomains create

My domain automatically create a subdomain I don’t know how to find it

Check the audit logs of your Cloudflare account. If there we’re any changes to your zone, they will be listed there.

that is my problem no audit log no changes

Well then, there we’re no changes.
Do you have l(Error) ogs on your server showing changes to your account through your app?

No I don’t have.
I have 3 subdomains I don’t know where it came from