Hello Kfh12,
Congratulations on your new iPhone. Ensuring the content from your prior iPhone syncs to your new device is important. To confirm, did you restore to a backup when you set up the new iPhone? If so, it's possible that you need to enable the sync settings for iCloud Photos and other iCloud related features to retrieve that content. You can find these settings using the steps listed below.
- Tap Settings.
- Tap [your name/Apple ID].
- Tap iCloud.
Once there, you'll be able to tap on Photos, iCloud Drive, and if needed Show All to review and enable the desired iCloud features. You'll also see the available iCloud storage space appear at the top of the screen. If you need additional support, you'll find the following article helpful in troubleshooting iCloud Photos and iCloud Contacts.
Get help with iCloud Photos
If your iCloud Contacts, Calendars, or Reminders won’t sync
If you did use a different Apple ID on your prior iPhone, you can follow the steps in the article below to locate any Apple ID you may have.
If you forgot your Apple ID email address or phone number
Let us know how that goes!