Hi ​@Giorgia Vespa !

Deleting your account is irreversible. You will not be able to recover it .
Have you considered canceling instead?

L'eliminazione del tuo account è irreversibile. Non potrai recuperarlo.
Hai pensato di annullarlo invece?

But if you still want to delete, here are the links

Ma se vuoi comunque eliminarlo, ecco i link (google translate)

link

https://support.deezer.com/hc/en-gb/articles/201168742-Delete-Your-Deezer-Account

Deezer support

https://support.deezer.com/hc/en-gb/requests/new?ticket_form_id=360000057869