Hi kami141,
We appreciate you reaching out to us.
On top of simply signing in with your Apple ID, you also need to set up the new device by restoring from the most recent backup, preferably a backup that you secured just before setting up the new iPhone.
Below is an article that can guide you through the steps.
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
If you are going to perform a factory reset on the new iPhone so you can set it up again and restore it from a backup, we recommend that you update the new iPhone before you do the reset.
Update your iPhone or iPad - Apple Support
Also, if you still have access to your old device, please secure a backup.
How to back up your iPhone, iPad, and iPod touch - Apple Support
When you're ready, you can reset the new iPhone to factory settings, then restore it from your most recent backup.
How to factory reset your iPhone, iPad, or iPod touch - Apple Support
Take care!