I want to restore iPhone data

Any data you had on your lost iPhone would be from any backups you have been making of it to either iCloud or iTunes/Finder.

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

Annew12 wrote:

I lost my mobile and I want to restore the data

Then restore your new iphone from your icloud or itunes backup.

If you lost your phone, you will need to get a new phone and then restore your most recent backup to the new phone.