It is possible that your phone number is 'known' to Apple, may have been used/linked to another Apple ID.
Contact your carrier and ask that the phone number belongs to someone else shortly before it was assigned to you.
Ask: what or which cooling-off period they use.
An explanation of cooling-off period in my region:
There is a difference: by law there is no 'cooling off period'.
Vodafone writes in a response that original Vodafone numbers, ie numbers purchased by Vodafone from ACM (Authority for Consumers & Markets), will go back into circulation after approximately nine months; six months applies to T-Mobile. Hi and Tele2 are talking about three months. KPN indicates that there is no term, which means that 'a telephone number that becomes available today may possibly be issued again tomorrow'. The procedure after terminating a subscription is always the same, whether it concerns death or other reasons.
After you have received an answer from your carrier, you can call Apple.