I lost my previous phone. Are my data, photos, apps etc still “out there” to transfer to new phone?

Read/watch these links -->

Click on this link to discover how to 'Restore your iPhone, iPad, or iPod touch from a backup' --> https://support.apple.com/HT204184

or watch this video if you're using a Mac to do this:

https://www.youtube.com/watch?v=Jbp3gGTQygg

Related information:

Use iCloud to transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch --> https://support.apple.com/HT210217

Some things are not stored in a backup. Click on this link and read "About missing information after you restore your iOS device with iCloud Backup" -->

https://support.apple.com/HT203768

If you can't back up your iOS or iPadOS device to a computer or restore it from a backup --> https://support.apple.com/HT203271

How can I get my previous contact numbers from my iPhone 8 Plus to my new iPhone 12 pro max?