How can I use one of my old back ups

here is a link..

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

Note that if you were using iCloud photos, your iPhone backup won't have your pictures

Also, by restoring your iPhone to an old backup, you would lose content that is newer than your backup

Rileymorton19 Said:

"How can I use one of my old back ups: How do I use one of my old backups so I can get my pictures back"

-------

For reference...

Troubleshooting Lost Photos:

Loss of data is something you would have agreed to upon opening an Apple Account. So, if the following does not work, then they are gone. That's just the way is is.

Four Tactics to Try:

A. Start here: If you're Missing Photos or Videos in the Photos app - Apple Support

B. Check iCloud Directly:

See if they reside in iCloud Photos. Log in here: https://www.icloud.com/photos

C. Use a Time Machine Backup:

Did you backup your Mac, recently? If so, then restore your Mac from that. You'd backup you Mac prior to doing so, and then restore your data from the backup you just created, through use of Migration Assistant.

D. Where Else to Check:

• PC
• PDA
• eMail
• Mac Device
• Cloud Storage
• Android Phone
• USB Flash Drive
• External Hard drive
• Secure Digital Card
• Compact Flash Card