سؤال

Have a look at the related articles about deleting your Apple account temporarily or permanently by clicking on the blue linked article:

Deactivate your Apple Account - Apple Support 

Delete your Apple Account - Apple Support 

Before you start, make sure to save your iCloud data first:

Archive or make copies of your iCloud data - Apple Support

These link versions should result in support articles in your language instead of them being forced to English language versions:

Carefully and thoroughly read this support article about how to delete your Apple Account—https://support.apple.com/HT204055

Particularly important is, "Make sure that you sign out of all your devices to avoid issues with apps that use your Apple Account or iCloud. After your account is deleted, you can’t sign out of iCloud or turn off Find My iPhone Activation Lock on your devices. If you forget to sign out, you might not be able to use your device when your account is deleted."

Archive or make copies of your iCloud data - Apple Support —> https://support.apple.com/108306

An alternative to account deletion:

Temporarily deactivate your account

Pause activity on your account and restrict access to your data.

https://support.apple.com/102268