How can i recover the photos from iCloud?

Maybe this will help: If you're missing photos or videos in the Photos app - Apple Support

Also, therein, you will find an article to Make sure that iCloud Photos is turned on

Good Luck :)

You can go to ➔ www.icloud.com form a computer and log in with your Apple ID and Password. Once you are logged into iCloud then you can open the Photos section. Identify the photos that are missing on your new iPhone and locate them. If the photos are there then you can select them and export them to you computer.

Axel F.