Hello Emmanuel Guerevitz,
Thank you for contacting the Microsoft Q&A Community.
This depends on the type of account. If this is a work or school account created by your Organization, then you need to contact the Administrator of the Tenant to help with this.
However, If this is a Personal Account or an account from a Tenant where you are the only one in there, then you need to contact the Data Protection Team to assist with this.
You can look into the below article to get support numbers depending on your country.
Babafemi